2.3.182 Problems 18101 to 18200

Table 2.907: Main lookup table. Sorted by time used to solve.

#

ID

ODE

Solved?

Maple

Mma

Sympy

time(sec)

18101

669

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

3.435

18102

24309

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

3.436

18103

12698

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

3.437

18104

9083

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

3.439

18105

25645

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

3.439

18106

6966

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

3.440

18107

17613

\begin{align*} 5 y-8 y^{\prime } x +4 x^{2} y^{\prime \prime }&=0 \\ \end{align*}

3.440

18108

4865

\begin{align*} x^{2} y^{\prime }&=a +b x +c \,x^{2}+y x \\ \end{align*}

3.441

18109

7742

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

3.441

18110

13933

\begin{align*} y^{\prime \prime }-a y^{\prime }+b \,{\mathrm e}^{2 a x} y&=0 \\ \end{align*}

3.441

18111

16213

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

3.441

18112

11479

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

3.443

18113

19955

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

3.443

18114

2539

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

3.444

18115

22453

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

3.445

18116

25711

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

3.445

18117

13944

\begin{align*} y^{\prime \prime }+\left (a \,{\mathrm e}^{\lambda x}+b \right ) y^{\prime }+c \left (a \,{\mathrm e}^{\lambda x}+b -c \right ) y&=0 \\ \end{align*}

3.446

18118

1700

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

3.448

18119

25495

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

3.449

18120

4430

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

3.450

18121

4521

\begin{align*} y^{\prime \prime }-y^{\prime }-2 y&=9 \,{\mathrm e}^{2 t} \operatorname {Heaviside}\left (t -1\right ) \\ y \left (0\right ) &= 6 \\ y^{\prime }\left (0\right ) &= 0 \\ \end{align*}
Using Laplace transform method.

3.451

18122

20229

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

3.451

18123

3463

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

3.452

18124

10433

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

3.452

18125

12970

\begin{align*} 12 y y^{\prime \prime }-15 {y^{\prime }}^{2}+8 y^{3}&=0 \\ \end{align*}

3.452

18126

13784

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

3.452

18127

5863

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

3.453

18128

17057

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

3.453

18129

21402

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

3.453

18130

4212

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

3.454

18131

11508

\begin{align*} y y^{\prime }+x y^{2}-4 x&=0 \\ \end{align*}

3.454

18132

19255

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

3.454

18133

21054

\begin{align*} x^{\prime }&=4 t^{3} x^{4} \\ \end{align*}

3.454

18134

20689

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

3.456

18135

25515

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

3.457

18136

22035

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

3.458

18137

8409

\begin{align*} m^{\prime }&=-\frac {k}{m^{2}} \\ m \left (0\right ) &= m_{0} \\ \end{align*}

3.459

18138

17176

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

3.459

18139

14558

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

3.460

18140

1504

\begin{align*} u^{\prime \prime }+\frac {u^{\prime }}{4}+u&=\frac {\operatorname {Heaviside}\left (t -\frac {3}{2}\right )}{2}-\frac {\operatorname {Heaviside}\left (t -\frac {5}{2}\right )}{2} \\ u \left (0\right ) &= 0 \\ u^{\prime }\left (0\right ) &= 0 \\ \end{align*}
Using Laplace transform method.

3.461

18141

17419

\begin{align*} y^{\prime \prime }-16 y&=0 \\ \end{align*}

3.461

18142

9118

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

3.462

18143

19678

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

3.463

18144

770

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

3.464

18145

10328

\begin{align*} y^{\prime }&=5 \,{\mathrm e}^{x^{2}+20 y}+\sin \left (x \right ) \\ \end{align*}

3.464

18146

11983

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

3.464

18147

12170

\begin{align*} y^{\prime }&=\frac {x}{-y+1+y^{4}+2 y^{2} x^{2}+x^{4}+y^{6}+3 x^{2} y^{4}+3 y^{2} x^{4}+x^{6}} \\ \end{align*}

3.464

18148

21432

\begin{align*} y^{\prime }+q \left (x \right ) y&=0 \\ y \left (\textit {x\_0} \right ) &= y_{0} \\ \end{align*}

3.464

18149

2458

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

3.465

18150

11594

\begin{align*} 6 y^{2} y^{\prime } x +x +2 y^{3}&=0 \\ \end{align*}

3.466

18151

16293

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

3.467

18152

21383

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

3.467

18153

4758

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

3.468

18154

5010

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

3.468

18155

13776

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

3.469

18156

1694

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

3.470

18157

2476

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

3.470

18158

1539

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

3.471

18159

17798

\begin{align*} x^{\prime \prime }+64 x&=0 \\ x \left (0\right ) &= {\frac {3}{4}} \\ x^{\prime }\left (0\right ) &= -2 \\ \end{align*}

3.471

18160

1534

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

3.472

18161

10690

\begin{align*} 3 x^{2} y^{\prime \prime }-x \left (8+x \right ) y^{\prime }+6 y&=0 \\ \end{align*}

3.472

18162

15919

\begin{align*} y^{\prime }-\frac {2 t y}{t^{2}+1}&=3 \\ \end{align*}

3.472

18163

17942

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

3.472

18164

1589

\begin{align*} \left (3 y^{2}+4 y\right ) y^{\prime }+2 x +\cos \left (x \right )&=0 \\ y \left (0\right ) &= 1 \\ \end{align*}

3.473

18165

11480

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

3.473

18166

15293

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

3.473

18167

4364

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

3.474

18168

25038

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

3.475

18169

25791

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

3.475

18170

25024

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

3.476

18171

4209

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

3.477

18172

785

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

3.478

18173

4292

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

3.478

18174

14411

\begin{align*} x^{\prime }&=3 x+2 y+3 \\ y^{\prime }&=7 x+5 y+2 t \\ \end{align*}

3.478

18175

15386

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

3.478

18176

18578

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

3.478

18177

19614

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

3.480

18178

22567

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

3.480

18179

10147

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

3.481

18180

17216

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

3.481

18181

17943

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

3.481

18182

25026

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

3.483

18183

1550

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

3.484

18184

1575

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

3.484

18185

13358

\begin{align*} y^{\prime }&=a \ln \left (x \right )^{k} \left (y-b \,x^{n}-c \right )^{2}+b n \,x^{n -1} \\ \end{align*}

3.484

18186

17614

\begin{align*} 3 x^{2} y^{\prime \prime }-4 y^{\prime } x +2 y&=0 \\ \end{align*}

3.485

18187

8180

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

3.486

18188

9925

\begin{align*} 2 y^{\prime \prime } x +6 y^{\prime }+y&=0 \\ \end{align*}
Series expansion around \(x=0\).

3.486

18189

10117

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

3.486

18190

8042

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

3.487

18191

11476

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

3.487

18192

202

\begin{align*} 9 y^{2} x^{2}+x^{{3}/{2}} y^{\prime }&=y^{2} \\ \end{align*}

3.488

18193

906

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

3.488

18194

2965

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

3.488

18195

15533

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

3.488

18196

17983

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

3.488

18197

6928

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

3.489

18198

6342

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

3.491

18199

23756

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

3.491

18200

22071

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

3.492