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

[_linear]

1.040

102

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

[_linear]

1.823

103

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

[_separable]

1.318

104

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

[_linear]

1.294

105

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

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

9.674

106

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

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

4.832

107

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

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

5.606

108

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

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

7.674

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‘]]

7.750

110

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

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

7.419

111

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

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

5.079

112

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

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

3.878

113

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

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

2.483

114

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

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

4.400

115

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

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

8.925

116

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

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

14.210

117

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

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

5.046

118

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

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

4.360

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‘]]

10.362

120

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

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

3.034

121

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

[[_homogeneous, ‘class C‘], _Riccati]

1.125

122

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

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

2.770

123

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

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

4.897

124

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

[_separable]

1.761

125

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

[_quadrature]

1.632

126

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

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

3.038

127

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

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

0.445

128

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

[_Bernoulli]

2.714

129

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

[_Bernoulli]

7.204

130

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

[[_1st_order, _with_linear_symmetries], _Bernoulli]

1.240

131

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

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

2.685

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)]‘]]

1.649

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’)‘]

2.848

134

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

[[_1st_order, _with_linear_symmetries]]

2.092

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‘]]

8.486

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‘]]

7.665

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]

0.306

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]

1.677

139

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

[_exact]

1.796

140

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

[_exact]

23.184

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]

3.061

142

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

[_exact]

2.443

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]

0.368

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]

7.635

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]

10.313

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]

3.530

147

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

[[_2nd_order, _missing_y]]

0.093

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]]

0.402

149

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

[[_2nd_order, _missing_x]]

1.031

150

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

[[_2nd_order, _missing_y]]

0.562

151

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

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

0.279

152

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

[[_2nd_order, _missing_y]]

0.432

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]]

0.874

154

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

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

0.451

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]]

0.214

156

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

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

1.171

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]]

0.491

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]]

0.405

159

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

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

0.837

160

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

[_Bernoulli]

2.194

161

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

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

1.871

162

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

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

2.984

163

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

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

7.408

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‘]]

22.185

165

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

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

1.215

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]

0.660

167

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

[_Riccati]

1.691

168

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

[[_homogeneous, ‘class C‘], _Riccati]

1.350

169

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

[[_1st_order, _with_linear_symmetries], _Clairaut]

0.233

170

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

[[_2nd_order, _missing_x]]

2.286

171

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

[_quadrature]

1.962

172

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

[_quadrature]

0.809

173

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

[_quadrature]

4.421

174

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

[_quadrature]

3.953

175

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

[_quadrature]

0.894

176

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

[_quadrature]

2.827

177

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

[_quadrature]

0.890

178

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

[_quadrature]

0.987

179

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

[_linear]

1.504

180

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

[_separable]

2.073

181

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

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

2.651

182

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

[_exact]

2.491

183

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

[_separable]

2.139

184

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

[_separable]

2.144

185

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

[_linear]

1.595

186

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

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

5.756

187

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

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

6.299

188

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

[_separable]

2.407

189

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

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

2.729

190

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

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

0.493

191

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

[_separable]

2.208

192

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

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

53.756

193

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

[[_linear, ‘class A‘]]

2.113

194

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

[[_homogeneous, ‘class C‘], _Riccati]

1.173

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]

2.836

196

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

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

58.181

197

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

[_separable]

2.030

198

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

[_linear]

2.704

199

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

[_linear]

1.415

200

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

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

11.232