Chapter 1
Lookup tables for all problems in current book

1.1 Chapter 2, First Order Equations. Problems page 149
1.2 Chapter 4, Second and Higher Order Linear Differential Equations. Problems page 221
1.3 Chapter 5.5 Laplace transform. Homogeneous equations. Problems page 357
1.4 Chapter 5.6 Laplace transform. Nonhomogeneous equations. Problems page 368
1.5 Chapter 6. Introduction to Systems of ODEs. Problems page 408
1.6 Chapter 6.4 Reduction to a single ODE. Problems page 415
1.7 Chapter 8.3 Systems of Linear Differential Equations (Variation of Parameters). Problems page 514
1.8 Chapter 8.4 Systems of Linear Differential Equations (Method of Undetermined Coefficients). Problems page 520

1.1 Chapter 2, First Order Equations. Problems page 149

Table 1.1: Lookup table

ID

problem

ODE

Solved?

Maple

Mma

Sympy

15115

Problem 1(a)

\begin{align*} y^{\prime }&=y \,{\mathrm e}^{x +y} \left (x^{2}+1\right ) \\ \end{align*}

15116

Problem 1(b)

\begin{align*} x^{2} y^{\prime }&=1+y^{2} \\ \end{align*}

15117

Problem 1(c)

\begin{align*} y^{\prime }&=\sin \left (y x \right ) \\ \end{align*}

15118

Problem 1(d)

\begin{align*} x \left ({\mathrm e}^{y}+4\right )&={\mathrm e}^{x +y} y^{\prime } \\ \end{align*}

15119

Problem 1(e)

\begin{align*} y^{\prime }&=\cos \left (x +y\right ) \\ \end{align*}

15120

Problem 1(f)

\begin{align*} x y^{\prime }+y&=x y^{2} \\ \end{align*}

15121

Problem 1(g)

\begin{align*} y^{\prime }&=t \ln \left (y^{2 t}\right )+t^{2} \\ \end{align*}

15122

Problem 1(h)

\begin{align*} y^{\prime }&=x \,{\mathrm e}^{y^{2}-x} \\ \end{align*}

15123

Problem 1(i)

\begin{align*} y^{\prime }&=\ln \left (y x \right ) \\ \end{align*}

15124

Problem 2(a)

\begin{align*} x \left (y+1\right )^{2}&=\left (x^{2}+1\right ) y \,{\mathrm e}^{y} y^{\prime } \\ \end{align*}

1.2 Chapter 4, Second and Higher Order Linear Differential Equations. Problems page 221

Table 1.3: Lookup table

ID

problem

ODE

Solved?

Maple

Mma

Sympy

15125

Problem 1(a)

\begin{align*} y^{\prime \prime }+x^{2} y&=0 \\ \end{align*}

15126

Problem 1(b)

\begin{align*} y^{\prime \prime \prime }+y x&=\sin \left (x \right ) \\ \end{align*}

15127

Problem 1(c)

\begin{align*} y^{\prime \prime }+y y^{\prime }&=1 \\ \end{align*}

15128

Problem 1(d)

\begin{align*} y^{\left (5\right )}-y^{\prime \prime \prime \prime }+y^{\prime }&=2 x^{2}+3 \\ \end{align*}

15129

Problem 1(e)

\begin{align*} y^{\prime \prime }+y y^{\prime \prime \prime \prime }&=1 \\ \end{align*}

15130

Problem 1(f)

\begin{align*} y^{\prime \prime \prime }+y x&=\cosh \left (x \right ) \\ \end{align*}

15131

Problem 1(g)

\begin{align*} \cos \left (x \right ) y^{\prime }+y \,{\mathrm e}^{x^{2}}&=\sinh \left (x \right ) \\ \end{align*}

15132

Problem 1(h)

\begin{align*} y^{\prime \prime \prime }+y x&=\cosh \left (x \right ) \\ \end{align*}

15133

Problem 1(i)

\begin{align*} y y^{\prime }&=1 \\ \end{align*}

15134

Problem 1(j)

\begin{align*} \sinh \left (x \right ) {y^{\prime }}^{2}+3 y&=0 \\ \end{align*}

15135

Problem 1(k)

\begin{align*} 5 y^{\prime }-y x&=0 \\ \end{align*}

15136

Problem 1(L)

\begin{align*} {y^{\prime }}^{2} \sqrt {y}&=\sin \left (x \right ) \\ \end{align*}

15137

Problem 1(m)

\begin{align*} 2 y^{\prime \prime }+3 y^{\prime }+4 x^{2} y&=1 \\ \end{align*}

15138

Problem 1(n)

\begin{align*} y^{\prime \prime \prime }&=1 \\ \end{align*}

15139

Problem 1(o)

\begin{align*} x^{2} y^{\prime \prime }-y&=\sin \left (x \right )^{2} \\ \end{align*}

15140

Problem 2(a)

\begin{align*} y^{\prime \prime }&=x^{2}+y \\ \end{align*}

15141

Problem 2(b)

\begin{align*} y^{\prime \prime \prime }+x y^{\prime \prime }-y^{2}&=\sin \left (x \right ) \\ \end{align*}

15142

Problem 2(c)

\begin{align*} {y^{\prime }}^{2}+x y {y^{\prime }}^{2}&=\ln \left (x \right ) \\ \end{align*}

15143

Problem 2(d)

\begin{align*} \sin \left (y^{\prime \prime }\right )+y y^{\prime \prime \prime \prime }&=1 \\ \end{align*}

15144

Problem 2(e)

\begin{align*} \sinh \left (x \right ) {y^{\prime }}^{2}+y^{\prime \prime }&=y x \\ \end{align*}

15145

Problem 2(f)

\begin{align*} y y^{\prime \prime }&=1 \\ \end{align*}

15146

Problem 2(h)

\begin{align*} {y^{\prime \prime \prime }}^{2}+\sqrt {y}&=\sin \left (x \right ) \\ \end{align*}

15147

Problem 3(a)

\begin{align*} y^{\prime \prime }+4 y^{\prime }+y&=0 \\ \end{align*}

15148

Problem 3(b)

\begin{align*} y^{\prime \prime \prime }-5 y^{\prime \prime }+y^{\prime }-y&=0 \\ \end{align*}

15149

Problem 3(c)

\begin{align*} 2 y^{\prime \prime }-3 y^{\prime }-2 y&=0 \\ \end{align*}

15150

Problem 3(d)

\begin{align*} 3 y^{\prime \prime \prime \prime }-2 y^{\prime \prime }+y^{\prime }&=0 \\ \end{align*}

15151

Problem 5(a)

\begin{align*} \left (x -3\right ) y^{\prime \prime }+y \ln \left (x \right )&=x^{2} \\ y \left (1\right ) &= 1 \\ y^{\prime }\left (1\right ) &= 2 \\ \end{align*}

15152

Problem 5(b)

\begin{align*} y^{\prime \prime }+\tan \left (x \right ) y^{\prime }+y \cot \left (x \right )&=0 \\ y \left (\frac {\pi }{4}\right ) &= 1 \\ y^{\prime }\left (\frac {\pi }{4}\right ) &= 0 \\ \end{align*}

15153

Problem 5(c)

\begin{align*} \left (x^{2}+1\right ) y^{\prime \prime }+\left (x -1\right ) y^{\prime }+y&=0 \\ y \left (0\right ) &= 0 \\ y^{\prime }\left (0\right ) &= 1 \\ \end{align*}

15154

Problem 5(d)

\begin{align*} x y^{\prime \prime }+2 x^{2} y^{\prime }+y \sin \left (x \right )&=\sinh \left (x \right ) \\ y \left (0\right ) &= 1 \\ y^{\prime }\left (0\right ) &= 1 \\ \end{align*}

15155

Problem 5(e)

\begin{align*} \sin \left (x \right ) y^{\prime \prime }+x y^{\prime }+7 y&=1 \\ y \left (1\right ) &= 1 \\ y^{\prime }\left (1\right ) &= 0 \\ \end{align*}

15156

Problem 5(f)

\begin{align*} y^{\prime \prime }-\left (x -1\right ) y^{\prime }+x^{2} y&=\tan \left (x \right ) \\ y \left (0\right ) &= 0 \\ y^{\prime }\left (0\right ) &= 0 \\ \end{align*}

15157

Problem 10

\begin{align*} \left (x -1\right ) y^{\prime \prime }-x y^{\prime }+y&=0 \\ \end{align*}

15158

Problem 13

\begin{align*} x^{2} y^{\prime \prime }-4 x^{2} y^{\prime }+\left (x^{2}+1\right ) y&=0 \\ \end{align*}

15159

Problem 15

\begin{align*} y^{\prime \prime }+\frac {k x}{y^{4}}&=0 \\ \end{align*}

15160

Problem 18(a)

\begin{align*} y^{\prime \prime }+2 x y^{\prime }+2 y&=0 \\ \end{align*}

15161

Problem 18(b)

\begin{align*} x y^{\prime \prime }+\sin \left (x \right ) y^{\prime }+\cos \left (x \right ) y&=0 \\ \end{align*}

15162

Problem 18(c)

\begin{align*} y^{\prime \prime }+2 x^{2} y^{\prime }+4 y x&=2 x \\ \end{align*}

15163

Problem 18(d)

\begin{align*} \left (-x^{2}+1\right ) y^{\prime \prime }+\left (1-x \right ) y^{\prime }+y&=1-2 x \\ \end{align*}

15164

Problem 18(e)

\begin{align*} y^{\prime \prime }+4 x y^{\prime }+\left (4 x^{2}+2\right ) y&=0 \\ \end{align*}

15165

Problem 18(f)

\begin{align*} x^{2} y^{\prime \prime }+x^{2} y^{\prime }+2 \left (1-x \right ) y&=0 \\ \end{align*}

15166

Problem 18(g)

\begin{align*} y^{\prime \prime }+x^{2} y^{\prime }+2 y x&=2 x \\ \end{align*}

15167

Problem 18(h)

\begin{align*} \ln \left (x^{2}+1\right ) y^{\prime \prime }+\frac {4 x y^{\prime }}{x^{2}+1}+\frac {\left (-x^{2}+1\right ) y}{\left (x^{2}+1\right )^{2}}&=0 \\ \end{align*}

15168

Problem 18(i)

\begin{align*} x y^{\prime \prime }+x^{2} y^{\prime }+2 y x&=0 \\ \end{align*}

15169

Problem 18(j)

\begin{align*} y^{\prime \prime }+\sin \left (x \right ) y^{\prime }+\cos \left (x \right ) y&=\cos \left (x \right ) \\ \end{align*}

15170

Problem 18(k)

\begin{align*} -\csc \left (x \right )^{2} y+\cot \left (x \right ) y^{\prime }+y^{\prime \prime }&=\cos \left (x \right ) \\ \end{align*}

15171

Problem 18(L)

\begin{align*} x \ln \left (x \right ) y^{\prime \prime }+2 y^{\prime }-\frac {y}{x}&=1 \\ \end{align*}

15172

Problem 19(a)

\begin{align*} x y^{\prime \prime }+\left (6 x y^{2}+1\right ) y^{\prime }+2 y^{3}+1&=0 \\ \end{align*}

15173

Problem 19(b)

\begin{align*} \frac {x y^{\prime \prime }}{y+1}+\frac {y y^{\prime }-{y^{\prime }}^{2} x +y^{\prime }}{\left (y+1\right )^{2}}&=x \sin \left (x \right ) \\ \end{align*}

15174

Problem 19(c)

\begin{align*} \left (x \cos \left (y\right )+\sin \left (x \right )\right ) y^{\prime \prime }-x {y^{\prime }}^{2} \sin \left (y\right )+2 \left (\cos \left (y\right )+\cos \left (x \right )\right ) y^{\prime }&=y \sin \left (x \right ) \\ \end{align*}

15175

Problem 19(d)

\begin{align*} y y^{\prime \prime } \sin \left (x \right )+\left (\sin \left (x \right ) y^{\prime }+\cos \left (x \right ) y\right ) y^{\prime }&=\cos \left (x \right ) \\ \end{align*}

15176

Problem 19(e)

\begin{align*} \left (1-y\right ) y^{\prime \prime }-{y^{\prime }}^{2}&=0 \\ \end{align*}

15177

Problem 19(f)

\begin{align*} \left (\cos \left (y\right )-\sin \left (y\right ) y\right ) y^{\prime \prime }-{y^{\prime }}^{2} \left (2 \sin \left (y\right )+y \cos \left (y\right )\right )&=\sin \left (x \right ) \\ \end{align*}

15178

Problem 20(a)

\begin{align*} y^{\prime \prime }+\frac {2 x y^{\prime }}{2 x -1}-\frac {4 x y}{\left (2 x -1\right )^{2}}&=0 \\ \end{align*}

15179

Problem 20(b)

\begin{align*} \left (x^{2}+2 x \right ) y^{\prime \prime }+\left (x^{2}+x +10\right ) y^{\prime }&=\left (25-6 x \right ) y \\ \end{align*}

15180

Problem 20(c)

\begin{align*} y^{\prime \prime }+\frac {y^{\prime }}{x +1}-\frac {\left (x +2\right ) y}{x^{2} \left (x +1\right )}&=0 \\ \end{align*}

15181

Problem 20(d)

\begin{align*} \left (x^{2}-x \right ) y^{\prime \prime }+\left (2 x^{2}+4 x -3\right ) y^{\prime }+8 y x&=0 \\ \end{align*}

15182

Problem 20(e)

\begin{align*} \frac {\left (x^{2}-x \right ) y^{\prime \prime }}{x}+\frac {\left (1+3 x \right ) y^{\prime }}{x}+\frac {y}{x}&=3 x \\ \end{align*}

15183

Problem 20(f)

\begin{align*} \left (2 \sin \left (x \right )-\cos \left (x \right )\right ) y^{\prime \prime }+\left (7 \sin \left (x \right )+4 \cos \left (x \right )\right ) y^{\prime }+10 \cos \left (x \right ) y&=0 \\ \end{align*}

15184

Problem 20(g)

\begin{align*} y^{\prime \prime }+\frac {\left (x -1\right ) y^{\prime }}{x}+\frac {y}{x^{3}}&=\frac {{\mathrm e}^{-\frac {1}{x}}}{x^{3}} \\ \end{align*}

15185

Problem 20(h)

\begin{align*} y^{\prime \prime }+\left (5+2 x \right ) y^{\prime }+\left (8+4 x \right ) y&={\mathrm e}^{-2 x} \\ \end{align*}

1.3 Chapter 5.5 Laplace transform. Homogeneous equations. Problems page 357

Table 1.5: Lookup table

ID

problem

ODE

Solved?

Maple

Mma

Sympy

15186

Problem 2

\begin{align*} y^{\prime \prime }+9 y&=0 \\ y \left (0\right ) &= 2 \\ y^{\prime }\left (0\right ) &= 0 \\ \end{align*}

Using Laplace transform method.

15187

Problem 3

\begin{align*} 4 y^{\prime \prime }-4 y^{\prime }+5 y&=0 \\ y \left (0\right ) &= 2 \\ y^{\prime }\left (0\right ) &= 3 \\ \end{align*}

Using Laplace transform method.

15188

Problem 4

\begin{align*} y^{\prime \prime }+2 y^{\prime }+y&=0 \\ y \left (0\right ) &= -1 \\ y^{\prime }\left (0\right ) &= 2 \\ \end{align*}

Using Laplace transform method.

15189

Problem 5

\begin{align*} y^{\prime \prime }-4 y^{\prime }+5 y&=0 \\ y \left (0\right ) &= 0 \\ y^{\prime }\left (0\right ) &= 3 \\ \end{align*}

Using Laplace transform method.

15190

Problem 6

\begin{align*} y^{\prime \prime }-y^{\prime }-6 y&=0 \\ y \left (0\right ) &= 2 \\ y^{\prime }\left (0\right ) &= 1 \\ \end{align*}

Using Laplace transform method.

15191

Problem 7

\begin{align*} 4 y^{\prime \prime }-4 y^{\prime }+37 y&=0 \\ y \left (0\right ) &= 2 \\ y^{\prime }\left (0\right ) &= -3 \\ \end{align*}

Using Laplace transform method.

15192

Problem 8

\begin{align*} y^{\prime \prime }+3 y^{\prime }+2 y&=0 \\ y \left (0\right ) &= 2 \\ y^{\prime }\left (0\right ) &= 3 \\ \end{align*}

Using Laplace transform method.

15193

Problem 9

\begin{align*} y^{\prime \prime }+2 y^{\prime }+5 y&=0 \\ y \left (0\right ) &= 1 \\ y^{\prime }\left (0\right ) &= -1 \\ \end{align*}

Using Laplace transform method.

15194

Problem 10

\begin{align*} 4 y^{\prime \prime }-12 y^{\prime }+13 y&=0 \\ y \left (0\right ) &= 2 \\ y^{\prime }\left (0\right ) &= 3 \\ \end{align*}

Using Laplace transform method.

15195

Problem 11

\begin{align*} y^{\prime \prime }+4 y^{\prime }+13 y&=0 \\ y \left (0\right ) &= 1 \\ y^{\prime }\left (0\right ) &= -6 \\ \end{align*}

Using Laplace transform method.

15196

Problem 12

\begin{align*} y^{\prime \prime }+6 y^{\prime }+9 y&=0 \\ y \left (0\right ) &= 1 \\ y^{\prime }\left (0\right ) &= -3 \\ \end{align*}

Using Laplace transform method.

15197

Problem 13

\begin{align*} y^{\prime \prime \prime \prime }+y&=0 \\ y \left (0\right ) &= 1 \\ y^{\prime }\left (0\right ) &= 0 \\ y^{\prime \prime }\left (0\right ) &= 0 \\ y^{\prime \prime \prime }\left (0\right ) &= \frac {\sqrt {2}}{2} \\ \end{align*}

Using Laplace transform method.

15198

Problem 14

\begin{align*} y^{\prime \prime }-2 y^{\prime }+5 y&=0 \\ y \left (0\right ) &= 0 \\ y^{\prime }\left (0\right ) &= -1 \\ \end{align*}

Using Laplace transform method.

15199

Problem 15

\begin{align*} y^{\prime \prime }-20 y^{\prime }+51 y&=0 \\ y \left (0\right ) &= 0 \\ y^{\prime }\left (0\right ) &= -14 \\ \end{align*}

Using Laplace transform method.

15200

Problem 16

\begin{align*} 2 y^{\prime \prime }+3 y^{\prime }+y&=0 \\ y \left (0\right ) &= 3 \\ y^{\prime }\left (0\right ) &= -1 \\ \end{align*}

Using Laplace transform method.

15201

Problem 17

\begin{align*} 3 y^{\prime \prime }+8 y^{\prime }-3 y&=0 \\ y \left (0\right ) &= 3 \\ y^{\prime }\left (0\right ) &= -4 \\ \end{align*}

Using Laplace transform method.

15202

Problem 18

\begin{align*} 2 y^{\prime \prime }+20 y^{\prime }+51 y&=0 \\ y \left (0\right ) &= 1 \\ y^{\prime }\left (0\right ) &= -5 \\ \end{align*}

Using Laplace transform method.

15203

Problem 19

\begin{align*} 4 y^{\prime \prime }+40 y^{\prime }+101 y&=0 \\ y \left (0\right ) &= 1 \\ y^{\prime }\left (0\right ) &= -5 \\ \end{align*}

Using Laplace transform method.

15204

Problem 20

\begin{align*} y^{\prime \prime }+6 y^{\prime }+34 y&=0 \\ y \left (0\right ) &= 3 \\ y^{\prime }\left (0\right ) &= 1 \\ \end{align*}

Using Laplace transform method.

15205

Problem 21

\begin{align*} y^{\prime \prime \prime }+8 y^{\prime \prime }+16 y^{\prime }&=0 \\ y \left (0\right ) &= 1 \\ y^{\prime }\left (0\right ) &= 1 \\ y^{\prime \prime }\left (0\right ) &= -8 \\ \end{align*}

Using Laplace transform method.

15206

Problem 22

\begin{align*} y^{\prime \prime \prime }+6 y^{\prime \prime }+13 y^{\prime }&=0 \\ y \left (0\right ) &= 1 \\ y^{\prime }\left (0\right ) &= 1 \\ y^{\prime \prime }\left (0\right ) &= -6 \\ \end{align*}

Using Laplace transform method.

15207

Problem 23

\begin{align*} y^{\prime \prime \prime }-6 y^{\prime \prime }+13 y^{\prime }&=0 \\ y \left (0\right ) &= 1 \\ y^{\prime }\left (0\right ) &= 1 \\ y^{\prime \prime }\left (0\right ) &= 6 \\ \end{align*}

Using Laplace transform method.

15208

Problem 24

\begin{align*} y^{\prime \prime \prime }+4 y^{\prime \prime }+29 y^{\prime }&=0 \\ y \left (0\right ) &= 1 \\ y^{\prime }\left (0\right ) &= 5 \\ y^{\prime \prime }\left (0\right ) &= -20 \\ \end{align*}

Using Laplace transform method.

15209

Problem 25

\begin{align*} y^{\prime \prime \prime }+6 y^{\prime \prime }+25 y^{\prime }&=0 \\ y \left (0\right ) &= 1 \\ y^{\prime }\left (0\right ) &= 4 \\ y^{\prime \prime }\left (0\right ) &= -24 \\ \end{align*}

Using Laplace transform method.

15210

Problem 26

\begin{align*} y^{\prime \prime \prime }-6 y^{\prime \prime }+10 y^{\prime }&=0 \\ y \left (0\right ) &= 1 \\ y^{\prime }\left (0\right ) &= 3 \\ y^{\prime \prime }\left (0\right ) &= 8 \\ \end{align*}

Using Laplace transform method.

15211

Problem 27

\begin{align*} y^{\prime \prime \prime \prime }+13 y^{\prime \prime }+36 y&=0 \\ y \left (0\right ) &= 0 \\ y^{\prime }\left (0\right ) &= -1 \\ y^{\prime \prime }\left (0\right ) &= 5 \\ y^{\prime \prime \prime }\left (0\right ) &= 19 \\ \end{align*}

Using Laplace transform method.

1.4 Chapter 5.6 Laplace transform. Nonhomogeneous equations. Problems page 368

Table 1.7: Lookup table

ID

problem

ODE

Solved?

Maple

Mma

Sympy

15212

Problem 2(a)

\begin{align*} y^{\prime \prime }+2 y^{\prime }+3 y&=9 t \\ y \left (0\right ) &= 0 \\ y^{\prime }\left (0\right ) &= 1 \\ \end{align*}

Using Laplace transform method.

15213

Problem 2(b)

\begin{align*} 4 y^{\prime \prime }+16 y^{\prime }+17 y&=17 t -1 \\ y \left (0\right ) &= -1 \\ y^{\prime }\left (0\right ) &= 2 \\ \end{align*}

Using Laplace transform method.

15214

Problem 2(c)

\begin{align*} 4 y^{\prime \prime }+5 y^{\prime }+4 y&=3 \,{\mathrm e}^{-t} \\ y \left (0\right ) &= -1 \\ y^{\prime }\left (0\right ) &= 1 \\ \end{align*}

Using Laplace transform method.

15215

Problem 2(d)

\begin{align*} y^{\prime \prime }-4 y^{\prime }+4 y&={\mathrm e}^{2 t} t^{2} \\ y \left (0\right ) &= 1 \\ y^{\prime }\left (0\right ) &= 2 \\ \end{align*}

Using Laplace transform method.

15216

Problem 2(e)

\begin{align*} y^{\prime \prime }+9 y&={\mathrm e}^{-2 t} \\ y \left (0\right ) &= -{\frac {2}{13}} \\ y^{\prime }\left (0\right ) &= {\frac {1}{13}} \\ \end{align*}

Using Laplace transform method.

15217

Problem 2(f)

\begin{align*} 2 y^{\prime \prime }-3 y^{\prime }+17 y&=17 t -1 \\ y \left (0\right ) &= -1 \\ y^{\prime }\left (0\right ) &= 2 \\ \end{align*}

Using Laplace transform method.

15218

Problem 2(g)

\begin{align*} y^{\prime \prime }+2 y^{\prime }+y&={\mathrm e}^{-t} \\ y \left (0\right ) &= 1 \\ y^{\prime }\left (0\right ) &= -1 \\ \end{align*}

Using Laplace transform method.

15219

Problem 2(h)

\begin{align*} y^{\prime \prime }-2 y^{\prime }+5 y&=t +2 \\ y \left (0\right ) &= 4 \\ y^{\prime }\left (0\right ) &= 1 \\ \end{align*}

Using Laplace transform method.

15220

Problem 2(i)

\begin{align*} y+2 y^{\prime }&={\mathrm e}^{-\frac {t}{2}} \\ y \left (0\right ) &= -1 \\ \end{align*}

Using Laplace transform method.

15221

Problem 2(i)[j]

\begin{align*} y^{\prime \prime }+8 y^{\prime }+20 y&=\sin \left (2 t \right ) \\ y \left (0\right ) &= 1 \\ y^{\prime }\left (0\right ) &= -4 \\ \end{align*}

Using Laplace transform method.

15222

Problem 2(j)[k]

\begin{align*} 4 y^{\prime \prime }-4 y^{\prime }+y&=t^{2} \\ y \left (0\right ) &= -12 \\ y^{\prime }\left (0\right ) &= 7 \\ \end{align*}

Using Laplace transform method.

15223

Problem 2(k)[l]

\begin{align*} 2 y^{\prime \prime }+y^{\prime }-y&=4 \sin \left (t \right ) \\ y \left (0\right ) &= 0 \\ y^{\prime }\left (0\right ) &= -4 \\ \end{align*}

Using Laplace transform method.

15224

Problem 2(m)

\begin{align*} -y+y^{\prime }&={\mathrm e}^{2 t} \\ y \left (0\right ) &= 1 \\ \end{align*}

Using Laplace transform method.

15225

Problem 2(l)[n]

\begin{align*} 3 y^{\prime \prime }+5 y^{\prime }-2 y&=7 \,{\mathrm e}^{-2 t} \\ y \left (0\right ) &= 3 \\ y^{\prime }\left (0\right ) &= 0 \\ \end{align*}

Using Laplace transform method.

15226

Problem 3(a)

\begin{align*} y+y^{\prime }&=\operatorname {Heaviside}\left (t \right )-\operatorname {Heaviside}\left (t -2\right ) \\ y \left (0\right ) &= 1 \\ \end{align*}

Using Laplace transform method.

15227

Problem 3(b)

\begin{align*} -2 y+y^{\prime }&=4 t \left (\operatorname {Heaviside}\left (t \right )-\operatorname {Heaviside}\left (t -2\right )\right ) \\ y \left (0\right ) &= 1 \\ \end{align*}

Using Laplace transform method.

15228

Problem 3(c)

\begin{align*} y^{\prime \prime }+9 y&=24 \sin \left (t \right ) \left (\operatorname {Heaviside}\left (t \right )+\operatorname {Heaviside}\left (t -\pi \right )\right ) \\ y \left (0\right ) &= 0 \\ y^{\prime }\left (0\right ) &= 0 \\ \end{align*}

Using Laplace transform method.

15229

Problem 3(d)

\begin{align*} y^{\prime \prime }+2 y^{\prime }+y&=\operatorname {Heaviside}\left (t \right )-\operatorname {Heaviside}\left (t -1\right ) \\ y \left (0\right ) &= 1 \\ y^{\prime }\left (0\right ) &= -1 \\ \end{align*}

Using Laplace transform method.

15230

Problem 3(e)

\begin{align*} y^{\prime \prime }+2 y^{\prime }+2 y&=5 \cos \left (t \right ) \left (\operatorname {Heaviside}\left (t \right )-\operatorname {Heaviside}\left (t -\frac {\pi }{2}\right )\right ) \\ y \left (0\right ) &= 1 \\ y^{\prime }\left (0\right ) &= -1 \\ \end{align*}

Using Laplace transform method.

15231

Problem 3(f)

\begin{align*} y^{\prime \prime }+5 y^{\prime }+6 y&=36 t \left (\operatorname {Heaviside}\left (t \right )-\operatorname {Heaviside}\left (t -1\right )\right ) \\ y \left (0\right ) &= -1 \\ y^{\prime }\left (0\right ) &= -2 \\ \end{align*}

Using Laplace transform method.

15232

Problem 3(g)

\begin{align*} y^{\prime \prime }+4 y^{\prime }+13 y&=39 \operatorname {Heaviside}\left (t \right )-507 \left (t -2\right ) \operatorname {Heaviside}\left (t -2\right ) \\ y \left (0\right ) &= 3 \\ y^{\prime }\left (0\right ) &= 1 \\ \end{align*}

Using Laplace transform method.

15233

Problem 3(h)

\begin{align*} y^{\prime \prime }+4 y&=3 \operatorname {Heaviside}\left (t \right )-3 \operatorname {Heaviside}\left (-4+t \right )+\left (2 t -5\right ) \operatorname {Heaviside}\left (-4+t \right ) \\ y \left (0\right ) &= {\frac {3}{4}} \\ y^{\prime }\left (0\right ) &= 2 \\ \end{align*}

Using Laplace transform method.

15234

Problem 3(i)

\begin{align*} 4 y^{\prime \prime }+4 y^{\prime }+5 y&=25 t \left (\operatorname {Heaviside}\left (t \right )-\operatorname {Heaviside}\left (t -\frac {\pi }{2}\right )\right ) \\ y \left (0\right ) &= 2 \\ y^{\prime }\left (0\right ) &= 2 \\ \end{align*}

Using Laplace transform method.

15235

Problem 3(j)

\begin{align*} y^{\prime \prime }+4 y^{\prime }+3 y&=\operatorname {Heaviside}\left (t \right )-\operatorname {Heaviside}\left (t -1\right )+\operatorname {Heaviside}\left (t -2\right )-\operatorname {Heaviside}\left (-3+t \right ) \\ y \left (0\right ) &= -{\frac {2}{3}} \\ y^{\prime }\left (0\right ) &= 1 \\ \end{align*}

Using Laplace transform method.

15236

Problem 4(a)

\begin{align*} y^{\prime \prime }-2 y^{\prime }&=\left \{\begin {array}{cc} 4 & 0\le t <1 \\ 6 & 1\le t \end {array}\right . \\ y \left (0\right ) &= -6 \\ y^{\prime }\left (0\right ) &= 1 \\ \end{align*}

Using Laplace transform method.

15237

Problem 4(b)

\begin{align*} y^{\prime \prime }-3 y^{\prime }+2 y&=\left \{\begin {array}{cc} 0 & 0\le t <1 \\ 1 & 1\le t <2 \\ -1 & 2\le t \end {array}\right . \\ y \left (0\right ) &= 3 \\ y^{\prime }\left (0\right ) &= -1 \\ \end{align*}

Using Laplace transform method.

15238

Problem 4(c)

\begin{align*} y^{\prime \prime }+3 y^{\prime }+2 y&=\left \{\begin {array}{cc} 1 & 0\le t <2 \\ -1 & 2\le t \end {array}\right . \\ y \left (0\right ) &= 0 \\ y^{\prime }\left (0\right ) &= 0 \\ \end{align*}

Using Laplace transform method.

15239

Problem 4(d)

\begin{align*} y^{\prime \prime }+y&=\left \{\begin {array}{cc} t & 0\le t <\pi \\ -t & \pi \le t \end {array}\right . \\ y \left (0\right ) &= 0 \\ y^{\prime }\left (0\right ) &= 0 \\ \end{align*}

Using Laplace transform method.

15240

Problem 4(e)

\begin{align*} y^{\prime \prime }+4 y&=\left \{\begin {array}{cc} 8 t & 0\le t <\frac {\pi }{2} \\ 8 \pi & \frac {\pi }{2}\le t \end {array}\right . \\ y \left (0\right ) &= 0 \\ y^{\prime }\left (0\right ) &= 0 \\ \end{align*}

Using Laplace transform method.

15241

Problem 5(a)

\begin{align*} y^{\prime \prime }+4 \pi ^{2} y&=3 \delta \left (t -\frac {1}{3}\right )-\delta \left (t -1\right ) \\ y \left (0\right ) &= 0 \\ y^{\prime }\left (0\right ) &= 0 \\ \end{align*}

Using Laplace transform method.

15242

Problem 5(b)

\begin{align*} y^{\prime \prime }+2 y^{\prime }+2 y&=3 \delta \left (t -1\right ) \\ y \left (0\right ) &= 0 \\ y^{\prime }\left (0\right ) &= 0 \\ \end{align*}

Using Laplace transform method.

15243

Problem 5(c)

\begin{align*} y^{\prime \prime }+4 y^{\prime }+29 y&=5 \delta \left (t -\pi \right )-5 \delta \left (t -2 \pi \right ) \\ y \left (0\right ) &= 0 \\ y^{\prime }\left (0\right ) &= 0 \\ \end{align*}

Using Laplace transform method.

15244

Problem 5(d)

\begin{align*} y^{\prime \prime }+3 y^{\prime }+2 y&=1-\delta \left (t -1\right ) \\ y \left (0\right ) &= 0 \\ y^{\prime }\left (0\right ) &= 0 \\ \end{align*}

Using Laplace transform method.

15245

Problem 5(e)

\begin{align*} 4 y^{\prime \prime }+4 y^{\prime }+y&={\mathrm e}^{-\frac {t}{2}} \delta \left (t -1\right ) \\ y \left (0\right ) &= 0 \\ y^{\prime }\left (0\right ) &= 0 \\ \end{align*}

Using Laplace transform method.

15246

Problem 5(f)

\begin{align*} y^{\prime \prime }-7 y^{\prime }+6 y&=\delta \left (t -1\right ) \\ y \left (0\right ) &= 0 \\ y^{\prime }\left (0\right ) &= 0 \\ \end{align*}

Using Laplace transform method.

15247

Problem 6(a)

\begin{align*} 10 Q^{\prime }+100 Q&=\operatorname {Heaviside}\left (t -1\right )-\operatorname {Heaviside}\left (t -2\right ) \\ Q \left (0\right ) &= 0 \\ \end{align*}

Using Laplace transform method.

15248

Problem 13(a)

\begin{align*} y^{\prime \prime \prime }+y^{\prime \prime }+4 y^{\prime }+4 y&=8 \\ y \left (0\right ) &= 4 \\ y^{\prime }\left (0\right ) &= -3 \\ y^{\prime \prime }\left (0\right ) &= -3 \\ \end{align*}

Using Laplace transform method.

15249

Problem 13(b)

\begin{align*} y^{\prime \prime \prime }-2 y^{\prime \prime }-y^{\prime }+2 y&=4 t \\ y \left (0\right ) &= 2 \\ y^{\prime }\left (0\right ) &= -2 \\ y^{\prime \prime }\left (0\right ) &= 4 \\ \end{align*}

Using Laplace transform method.

15250

Problem 13(c)

\begin{align*} y^{\prime \prime \prime }-y^{\prime \prime }+4 y^{\prime }-4 y&=8 \,{\mathrm e}^{2 t}-5 \,{\mathrm e}^{t} \\ y \left (0\right ) &= 2 \\ y^{\prime }\left (0\right ) &= 0 \\ y^{\prime \prime }\left (0\right ) &= 3 \\ \end{align*}

Using Laplace transform method.

15251

Problem 13(d)

\begin{align*} y^{\prime \prime \prime }-5 y^{\prime \prime }+y^{\prime }-y&=-t^{2}+2 t -10 \\ y \left (0\right ) &= 2 \\ y^{\prime }\left (0\right ) &= 0 \\ y^{\prime \prime }\left (0\right ) &= 0 \\ \end{align*}

Using Laplace transform method.

15252

Problem 14(a)

\begin{align*} y^{\prime \prime \prime \prime }-5 y^{\prime \prime }+4 y&=12 \operatorname {Heaviside}\left (t \right )-12 \operatorname {Heaviside}\left (t -1\right ) \\ y \left (0\right ) &= 0 \\ y^{\prime }\left (0\right ) &= 0 \\ y^{\prime \prime }\left (0\right ) &= 0 \\ y^{\prime \prime \prime }\left (0\right ) &= 0 \\ \end{align*}

Using Laplace transform method.

15253

Problem 14(b)

\begin{align*} y^{\prime \prime \prime \prime }-16 y&=32 \operatorname {Heaviside}\left (t \right )-32 \operatorname {Heaviside}\left (t -\pi \right ) \\ y \left (0\right ) &= 0 \\ y^{\prime }\left (0\right ) &= 0 \\ y^{\prime \prime }\left (0\right ) &= 0 \\ y^{\prime \prime \prime }\left (0\right ) &= 0 \\ \end{align*}

Using Laplace transform method.

1.5 Chapter 6. Introduction to Systems of ODEs. Problems page 408

Table 1.9: Lookup table

ID

problem

ODE

Solved?

Maple

Mma

Sympy

15254

Problem 1(a)

\begin{align*} t^{2} y^{\prime \prime }+3 t y^{\prime }+y&=t^{7} \\ \end{align*}

15255

Problem 1(b)

\begin{align*} t^{2} y^{\prime \prime }-6 t y^{\prime }+\sin \left (2 t \right ) y&=\ln \left (t \right ) \\ \end{align*}

15256

Problem 1(c)

\begin{align*} y^{\prime \prime }+3 y^{\prime }+\frac {y}{t}&=t \\ \end{align*}

15257

Problem 1(d)

\begin{align*} y^{\prime \prime }+t y^{\prime }-\ln \left (t \right ) y&=\cos \left (2 t \right ) \\ \end{align*}

15258

Problem 1(e)

\begin{align*} t^{3} y^{\prime \prime }-2 t y^{\prime }+y&=t^{4} \\ \end{align*}

15259

Problem 2(a)

\begin{align*} y^{\prime \prime }+2 y^{\prime }+y&=1 \\ \end{align*}

15260

Problem 2(b)

\begin{align*} y^{\prime \prime }-2 y^{\prime }+5 y&={\mathrm e}^{t} \\ \end{align*}

15261

Problem 2(c)

\begin{align*} y^{\prime \prime }-3 y^{\prime }-7 y&=4 \\ \end{align*}

15262

Problem 2(d)

\begin{align*} y^{\prime \prime \prime }+3 y^{\prime \prime }+3 y^{\prime }+y&=5 \\ \end{align*}

15263

Problem 2(e)

\begin{align*} 3 y^{\prime \prime }+5 y^{\prime }-2 y&=3 t^{2} \\ \end{align*}

15264

Problem 2(f)

\begin{align*} y^{\prime \prime \prime }&=2 y^{\prime \prime }-4 y^{\prime }+\sin \left (t \right ) \\ \end{align*}

15265

Problem 3(a)

\begin{align*} x^{\prime }\left (t \right )&=x \left (t \right )-2 y \left (t \right ) \\ y^{\prime }\left (t \right )&=3 x \left (t \right )-4 y \left (t \right ) \\ \end{align*}

15266

Problem 3(b)

\begin{align*} x^{\prime }\left (t \right )&=\frac {5 x \left (t \right )}{4}+\frac {3 y \left (t \right )}{4} \\ y^{\prime }\left (t \right )&=\frac {x \left (t \right )}{2}-\frac {3 y \left (t \right )}{2} \\ \end{align*}

15267

Problem 3(c)

\begin{align*} x^{\prime }\left (t \right )-x \left (t \right )+2 y \left (t \right )&=0 \\ y^{\prime }\left (t \right )+y \left (t \right )-x \left (t \right )&=0 \\ \end{align*}

15268

Problem 3(d)

\begin{align*} x^{\prime }\left (t \right )+5 x \left (t \right )-2 y \left (t \right )&=0 \\ 2 x \left (t \right )+y^{\prime }\left (t \right )-y \left (t \right )&=0 \\ \end{align*}

15269

Problem 3(e)

\begin{align*} x^{\prime }\left (t \right )-3 x \left (t \right )+2 y \left (t \right )&=0 \\ y^{\prime }\left (t \right )-x \left (t \right )+3 y \left (t \right )&=0 \\ \end{align*}

15270

Problem 3(f)

\begin{align*} x^{\prime }\left (t \right )+x \left (t \right )-z \left (t \right )&=0 \\ x \left (t \right )+y^{\prime }\left (t \right )-y \left (t \right )&=0 \\ z^{\prime }\left (t \right )+x \left (t \right )+2 y \left (t \right )-3 z \left (t \right )&=0 \\ \end{align*}

15271

Problem 3(g)

\begin{align*} x^{\prime }\left (t \right )&=-\frac {x \left (t \right )}{2}+2 y \left (t \right )-3 z \left (t \right ) \\ y^{\prime }\left (t \right )&=y \left (t \right )-\frac {z \left (t \right )}{2} \\ z^{\prime }\left (t \right )&=-2 x \left (t \right )+z \left (t \right ) \\ \end{align*}

1.6 Chapter 6.4 Reduction to a single ODE. Problems page 415

Table 1.11: Lookup table

ID

problem

ODE

Solved?

Maple

Mma

Sympy

15272

Problem 4(a)

\begin{align*} x^{\prime }\left (t \right )+y^{\prime }\left (t \right )&=y \left (t \right ) \\ x^{\prime }\left (t \right )-y^{\prime }\left (t \right )&=x \left (t \right ) \\ \end{align*}

15273

Problem 4(b)

\begin{align*} x^{\prime }\left (t \right )+2 y^{\prime }\left (t \right )&=t \\ x^{\prime }\left (t \right )-y^{\prime }\left (t \right )&=x \left (t \right )+y \left (t \right ) \\ \end{align*}

15274

Problem 4(c)

\begin{align*} x^{\prime }\left (t \right )-y^{\prime }\left (t \right )&=x \left (t \right )+y \left (t \right )-t \\ 2 x^{\prime }\left (t \right )+3 y^{\prime }\left (t \right )&=2 x \left (t \right )+6 \\ \end{align*}

15275

Problem 4(d)

\begin{align*} 2 x^{\prime }\left (t \right )-y^{\prime }\left (t \right )&=t \\ 3 x^{\prime }\left (t \right )+2 y^{\prime }\left (t \right )&=y \left (t \right ) \\ \end{align*}

15276

Problem 4(e)

\begin{align*} 5 x^{\prime }\left (t \right )-3 y^{\prime }\left (t \right )&=x \left (t \right )+y \left (t \right ) \\ 3 x^{\prime }\left (t \right )-y^{\prime }\left (t \right )&=t \\ \end{align*}

15277

Problem 4(f)

\begin{align*} x^{\prime }\left (t \right )-4 y^{\prime }\left (t \right )&=0 \\ 2 x^{\prime }\left (t \right )-3 y^{\prime }\left (t \right )&=t +y \left (t \right ) \\ \end{align*}

15278

Problem 4(g)

\begin{align*} 3 x^{\prime }\left (t \right )+2 y^{\prime }\left (t \right )&=\sin \left (t \right ) \\ x^{\prime }\left (t \right )-2 y^{\prime }\left (t \right )&=x \left (t \right )+y \left (t \right )+t \\ \end{align*}

1.7 Chapter 8.3 Systems of Linear Differential Equations (Variation of Parameters). Problems page 514

Table 1.13: Lookup table

ID

problem

ODE

Solved?

Maple

Mma

Sympy

15279

Problem 3(a)

\begin{align*} x^{\prime }\left (t \right )&=-4 x \left (t \right )+9 y \left (t \right )+12 \,{\mathrm e}^{-t} \\ y^{\prime }\left (t \right )&=-5 x \left (t \right )+2 y \left (t \right ) \\ \end{align*}

15280

Problem 3(b)

\begin{align*} x^{\prime }\left (t \right )&=-7 x \left (t \right )+6 y \left (t \right )+6 \,{\mathrm e}^{-t} \\ y^{\prime }\left (t \right )&=-12 x \left (t \right )+5 y \left (t \right )+37 \\ \end{align*}

15281

Problem 3(c)

\begin{align*} x^{\prime }\left (t \right )&=-7 x \left (t \right )+10 y \left (t \right )+18 \,{\mathrm e}^{t} \\ y^{\prime }\left (t \right )&=-10 x \left (t \right )+9 y \left (t \right )+37 \\ \end{align*}

15282

Problem 3(d)

\begin{align*} x^{\prime }\left (t \right )&=-14 x \left (t \right )+39 y \left (t \right )+78 \sinh \left (t \right ) \\ y^{\prime }\left (t \right )&=-6 x \left (t \right )+16 y \left (t \right )+6 \cosh \left (t \right ) \\ \end{align*}

15283

Problem 4(a)

\begin{align*} x^{\prime }\left (t \right )&=2 x \left (t \right )+4 y \left (t \right )-2 z \left (t \right )-2 \sinh \left (t \right ) \\ y^{\prime }\left (t \right )&=4 x \left (t \right )+2 y \left (t \right )-2 z \left (t \right )+10 \cosh \left (t \right ) \\ z^{\prime }\left (t \right )&=-x \left (t \right )+3 y \left (t \right )+z \left (t \right )+5 \\ \end{align*}

15284

Problem 4(b)

\begin{align*} x^{\prime }\left (t \right )&=2 x \left (t \right )+6 y \left (t \right )-2 z \left (t \right )+50 \,{\mathrm e}^{t} \\ y^{\prime }\left (t \right )&=6 x \left (t \right )+2 y \left (t \right )-2 z \left (t \right )+21 \,{\mathrm e}^{-t} \\ z^{\prime }\left (t \right )&=-x \left (t \right )+6 y \left (t \right )+z \left (t \right )+9 \\ \end{align*}

15285

Problem 4(c)

\begin{align*} x^{\prime }\left (t \right )&=-2 x \left (t \right )-2 y \left (t \right )+4 z \left (t \right ) \\ y^{\prime }\left (t \right )&=-2 x \left (t \right )+y \left (t \right )+2 z \left (t \right ) \\ z^{\prime }\left (t \right )&=-4 x \left (t \right )-2 y \left (t \right )+6 z \left (t \right )+{\mathrm e}^{2 t} \\ \end{align*}

15286

Problem 4(d)

\begin{align*} x^{\prime }\left (t \right )&=3 x \left (t \right )-2 y \left (t \right )+3 z \left (t \right ) \\ y^{\prime }\left (t \right )&=x \left (t \right )-y \left (t \right )+2 z \left (t \right )+2 \,{\mathrm e}^{-t} \\ z^{\prime }\left (t \right )&=-2 x \left (t \right )+2 y \left (t \right )-2 z \left (t \right ) \\ \end{align*}

15287

Problem 5(a)

\begin{align*} x^{\prime }\left (t \right )&=7 x \left (t \right )+y \left (t \right )-1-6 \,{\mathrm e}^{t} \\ y^{\prime }\left (t \right )&=-4 x \left (t \right )+3 y \left (t \right )+4 \,{\mathrm e}^{t}-3 \\ \end{align*}

With initial conditions

\begin{align*} x \left (0\right ) &= 1 \\ y \left (0\right ) &= -1 \\ \end{align*}

15288

Problem 5(b)

\begin{align*} x^{\prime }\left (t \right )&=3 x \left (t \right )-2 y \left (t \right )+24 \sin \left (t \right ) \\ y^{\prime }\left (t \right )&=9 x \left (t \right )-3 y \left (t \right )+12 \cos \left (t \right ) \\ \end{align*}

With initial conditions

\begin{align*} x \left (0\right ) &= 1 \\ y \left (0\right ) &= -1 \\ \end{align*}

15289

Problem 5(c)

\begin{align*} x^{\prime }\left (t \right )&=7 x \left (t \right )-4 y \left (t \right )+10 \,{\mathrm e}^{t} \\ y^{\prime }\left (t \right )&=3 x \left (t \right )+14 y \left (t \right )+6 \,{\mathrm e}^{2 t} \\ \end{align*}

With initial conditions

\begin{align*} x \left (0\right ) &= 1 \\ y \left (0\right ) &= -1 \\ \end{align*}

15290

Problem 5(d)

\begin{align*} x^{\prime }\left (t \right )&=-7 x \left (t \right )+4 y \left (t \right )+6 \,{\mathrm e}^{3 t} \\ y^{\prime }\left (t \right )&=-5 x \left (t \right )+2 y \left (t \right )+6 \,{\mathrm e}^{2 t} \\ \end{align*}

With initial conditions

\begin{align*} x \left (0\right ) &= 1 \\ y \left (0\right ) &= -1 \\ \end{align*}

15291

Problem 6(a)

\begin{align*} x^{\prime }\left (t \right )&=-3 x \left (t \right )-3 y \left (t \right )+z \left (t \right ) \\ y^{\prime }\left (t \right )&=2 y \left (t \right )+2 z \left (t \right )+29 \,{\mathrm e}^{-t} \\ z^{\prime }\left (t \right )&=5 x \left (t \right )+y \left (t \right )+z \left (t \right )+39 \,{\mathrm e}^{t} \\ \end{align*}

With initial conditions

\begin{align*} x \left (0\right ) &= 1 \\ y \left (0\right ) &= 2 \\ z \left (0\right ) &= 3 \\ \end{align*}

15292

Problem 6(b)

\begin{align*} x^{\prime }\left (t \right )&=2 x \left (t \right )+y \left (t \right )-z \left (t \right )+5 \sin \left (t \right ) \\ y^{\prime }\left (t \right )&=y \left (t \right )+z \left (t \right )-10 \cos \left (t \right ) \\ z^{\prime }\left (t \right )&=x \left (t \right )+z \left (t \right )+2 \\ \end{align*}

With initial conditions

\begin{align*} x \left (0\right ) &= 1 \\ y \left (0\right ) &= 2 \\ z \left (0\right ) &= 3 \\ \end{align*}

15293

Problem 6(c)

\begin{align*} x^{\prime }\left (t \right )&=-3 x \left (t \right )+3 y \left (t \right )+z \left (t \right )+5 \sin \left (2 t \right ) \\ y^{\prime }\left (t \right )&=x \left (t \right )-5 y \left (t \right )-3 z \left (t \right )+5 \cos \left (2 t \right ) \\ z^{\prime }\left (t \right )&=-3 x \left (t \right )+7 y \left (t \right )+3 z \left (t \right )+23 \,{\mathrm e}^{t} \\ \end{align*}

With initial conditions

\begin{align*} x \left (0\right ) &= 1 \\ y \left (0\right ) &= 2 \\ z \left (0\right ) &= 3 \\ \end{align*}

15294

Problem 6(d)

\begin{align*} x^{\prime }\left (t \right )&=-3 x \left (t \right )+y \left (t \right )-3 z \left (t \right )+2 \,{\mathrm e}^{t} \\ y^{\prime }\left (t \right )&=4 x \left (t \right )-y \left (t \right )+2 z \left (t \right )+4 \,{\mathrm e}^{t} \\ z^{\prime }\left (t \right )&=4 x \left (t \right )-2 y \left (t \right )+3 z \left (t \right )+4 \,{\mathrm e}^{t} \\ \end{align*}

With initial conditions

\begin{align*} x \left (0\right ) &= 1 \\ y \left (0\right ) &= 2 \\ z \left (0\right ) &= 3 \\ \end{align*}

1.8 Chapter 8.4 Systems of Linear Differential Equations (Method of Undetermined Coefficients). Problems page 520

Table 1.15: Lookup table

ID

problem

ODE

Solved?

Maple

Mma

Sympy

15295

Problem 1(a)

\begin{align*} x^{\prime }\left (t \right )&=x \left (t \right )+5 y \left (t \right )+10 \sinh \left (t \right ) \\ y^{\prime }\left (t \right )&=19 x \left (t \right )-13 y \left (t \right )+24 \sinh \left (t \right ) \\ \end{align*}

15296

Problem 1(b)

\begin{align*} x^{\prime }\left (t \right )&=9 x \left (t \right )-3 y \left (t \right )-6 t \\ y^{\prime }\left (t \right )&=-x \left (t \right )+11 y \left (t \right )+10 t \\ \end{align*}