2.2.2 Problems 101 to 200

Table 2.21: Main lookup table. Sorted sequentially by problem number.

#

ODE

CAS classification

Solved?

Maple

Mma

Sympy

time(sec)

101

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

[_linear]

1.310

102

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

[_linear]

2.316

103

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

[_separable]

1.721

104

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

[_linear]

1.500

105

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

[[_homogeneous, ‘class A‘], _exact, _rational, [_Abel, ‘2nd type‘, ‘class A‘]]

12.769

106

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

[[_homogeneous, ‘class A‘], _rational, _Bernoulli]

6.049

107

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

[[_homogeneous, ‘class A‘], _dAlembert]

5.642

108

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

[[_homogeneous, ‘class A‘], _rational, [_Abel, ‘2nd type‘, ‘class A‘]]

9.465

109

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

[[_homogeneous, ‘class A‘], _rational, [_Abel, ‘2nd type‘, ‘class B‘]]

9.817

110

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

[[_homogeneous, ‘class A‘], _rational, [_Abel, ‘2nd type‘, ‘class A‘]]

9.563

111

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

[[_homogeneous, ‘class A‘], _rational, _Bernoulli]

6.684

112

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

[[_homogeneous, ‘class A‘], _dAlembert]

5.714

113

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

[[_homogeneous, ‘class A‘], _rational, _Bernoulli]

3.782

114

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

[[_homogeneous, ‘class A‘], _rational, _Bernoulli]

7.489

115

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

[[_homogeneous, ‘class A‘], _rational, _dAlembert]

12.697

116

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

[[_homogeneous, ‘class A‘], _dAlembert]

16.947

117

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

[[_homogeneous, ‘class A‘], _rational, _dAlembert]

6.546

118

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

[[_homogeneous, ‘class A‘], _rational, _dAlembert]

7.661

119

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

[[_homogeneous, ‘class A‘], _rational, [_Abel, ‘2nd type‘, ‘class B‘]]

15.601

120

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

[[_homogeneous, ‘class C‘], _dAlembert]

2.969

121

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

[[_homogeneous, ‘class C‘], _Riccati]

1.897

122

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

[[_homogeneous, ‘class C‘], [_Abel, ‘2nd type‘, ‘class C‘], _dAlembert]

4.279

123

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

[[_homogeneous, ‘class G‘], _rational, _Bernoulli]

7.414

124

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

[_separable]

2.505

125

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

[_quadrature]

2.748

126

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

[[_homogeneous, ‘class G‘], _rational, _Bernoulli]

4.608

127

\begin{align*} x y^{\prime }+6 y&=3 x y^{{4}/{3}} \\ \end{align*}

[[_homogeneous, ‘class G‘], _rational, _Bernoulli]

0.674

128

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

[_Bernoulli]

3.697

129

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

[_Bernoulli]

8.826

130

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

[[_1st_order, _with_linear_symmetries], _Bernoulli]

1.745

131

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

[[_homogeneous, ‘class G‘], _rational, _Bernoulli]

3.685

132

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

[[_1st_order, ‘_with_symmetry_[F(x),G(x)]‘]]

1.982

133

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

[‘y=_G(x,y’)‘]

3.498

134

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

[[_1st_order, _with_linear_symmetries]]

2.827

135

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

[[_homogeneous, ‘class A‘], _exact, _rational, [_Abel, ‘2nd type‘, ‘class A‘]]

10.343

136

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

[[_homogeneous, ‘class A‘], _exact, _rational, [_Abel, ‘2nd type‘, ‘class A‘]]

10.667

137

\begin{align*} 3 x^{2}+2 y^{2}+\left (4 y x +6 y^{2}\right ) y^{\prime }&=0 \\ \end{align*}

[[_homogeneous, ‘class A‘], _exact, _rational, _dAlembert]

0.441

138

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

[_exact, _rational]

2.066

139

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

[_exact]

2.086

140

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

[_exact]

23.193

141

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

[_exact]

3.642

142

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

[_exact]

3.060

143

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

[_exact, _rational]

0.717

144

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

[_exact]

8.814

145

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

[_exact, _rational]

7.143

146

\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*}

[[_1st_order, _with_linear_symmetries], _exact, _rational]

3.700

147

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

[[_2nd_order, _missing_y]]

0.161

148

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

[[_2nd_order, _missing_x], [_2nd_order, _exact, _nonlinear], _Liouville, [_2nd_order, _reducible, _mu_x_y1], [_2nd_order, _reducible, _mu_xy]]

0.770

149

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

[[_2nd_order, _missing_x]]

1.804

150

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

[[_2nd_order, _missing_y]]

1.046

151

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

[[_2nd_order, _missing_x], _Liouville, [_2nd_order, _reducible, _mu_xy]]

0.564

152

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

[[_2nd_order, _missing_y]]

0.770

153

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

[[_2nd_order, _missing_x], [_2nd_order, _exact, _nonlinear], _Liouville, [_2nd_order, _reducible, _mu_x_y1], [_2nd_order, _reducible, _mu_xy]]

1.726

154

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

[[_2nd_order, _missing_y], [_2nd_order, _reducible, _mu_xy]]

0.668

155

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

[[_2nd_order, _missing_x], [_2nd_order, _reducible, _mu_x_y1], [_2nd_order, _reducible, _mu_y_y1]]

0.415

156

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

[[_2nd_order, _missing_x], [_2nd_order, _reducible, _mu_x_y1]]

1.891

157

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

[[_2nd_order, _missing_x], [_2nd_order, _exact, _nonlinear], _Lagerstrom, [_2nd_order, _reducible, _mu_x_y1], [_2nd_order, _reducible, _mu_xy]]

0.862

158

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

[[_2nd_order, _missing_x], _Liouville, [_2nd_order, _reducible, _mu_x_y1], [_2nd_order, _reducible, _mu_xy]]

0.642

159

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

[[_homogeneous, ‘class C‘], _dAlembert]

1.241

160

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

[_Bernoulli]

3.114

161

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

[[_1st_order, ‘_with_symmetry_[F(x),G(x)*y+H(x)]‘]]

2.595

162

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

[[_1st_order, ‘_with_symmetry_[F(x),G(x)*y+H(x)]‘]]

4.036

163

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

[[_homogeneous, ‘class C‘], _rational, [_Abel, ‘2nd type‘, ‘class A‘]]

10.345

164

\begin{align*} y^{\prime }&=\frac {2 y-x +7}{4 x -3 y-18} \\ \end{align*}

[[_homogeneous, ‘class C‘], _rational, [_Abel, ‘2nd type‘, ‘class A‘]]

21.608

165

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

[[_homogeneous, ‘class C‘], _dAlembert]

1.865

166

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

[[_homogeneous, ‘class A‘], _rational, _dAlembert]

0.963

167

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

[_Riccati]

2.556

168

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

[[_homogeneous, ‘class C‘], _Riccati]

2.316

169

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

[[_1st_order, _with_linear_symmetries], _Clairaut]

0.379

170

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

[[_2nd_order, _missing_x]]

4.644

171

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

[_quadrature]

1.491

172

\begin{align*} x^{\prime }&=10 x-x^{2} \\ x \left (0\right ) &= 1 \\ \end{align*}

[_quadrature]

1.256

173

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

[_quadrature]

3.721

174

\begin{align*} x^{\prime }&=9-4 x^{2} \\ x \left (0\right ) &= 0 \\ \end{align*}

[_quadrature]

4.273

175

\begin{align*} x^{\prime }&=3 x \left (5-x\right ) \\ x \left (0\right ) &= 8 \\ \end{align*}

[_quadrature]

1.364

176

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

[_quadrature]

2.088

177

\begin{align*} x^{\prime }&=4 x \left (7-x\right ) \\ x \left (0\right ) &= 11 \\ \end{align*}

[_quadrature]

2.283

178

\begin{align*} x^{\prime }&=7 x \left (x-13\right ) \\ x \left (0\right ) &= 17 \\ \end{align*}

[_quadrature]

2.365

179

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

[_linear]

2.023

180

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

[_separable]

3.063

181

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

[[_homogeneous, ‘class A‘], _rational, _Bernoulli]

4.022

182

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

[_exact]

3.314

183

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

[_separable]

3.248

184

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

[_separable]

3.076

185

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

[_linear]

2.382

186

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

[[_homogeneous, ‘class A‘], _rational, _Bernoulli]

6.569

187

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

[[_homogeneous, ‘class G‘], _rational, _Bernoulli]

7.816

188

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

[_separable]

3.524

189

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

[[_homogeneous, ‘class A‘], _rational, _Bernoulli]

4.110

190

\begin{align*} 6 x y^{3}+2 y^{4}+\left (9 x^{2} y^{2}+8 x y^{3}\right ) y^{\prime }&=0 \\ \end{align*}

[[_homogeneous, ‘class A‘], _exact, _rational, [_Abel, ‘2nd type‘, ‘class B‘]]

0.791

191

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

[_separable]

3.195

192

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

[[_homogeneous, ‘class A‘], _rational, _Bernoulli]

53.204

193

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

[[_linear, ‘class A‘]]

2.980

194

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

[[_homogeneous, ‘class C‘], _Riccati]

1.809

195

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

[_exact]

3.700

196

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

[[_homogeneous, ‘class A‘], _rational, _Bernoulli]

57.162

197

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

[_separable]

2.779

198

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

[_linear]

3.828

199

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

[_linear]

1.982

200

\begin{align*} x y^{\prime }&=6 y+12 x^{4} y^{{2}/{3}} \\ \end{align*}

[[_homogeneous, ‘class G‘], _rational, _Bernoulli]

14.431