2.2.172 Problems 17101 to 17200

Table 2.345: Main lookup table. Sorted sequentially by problem number.

#

ODE

CAS classification

Solved?

time (sec)

17101

\[ {}x^{\prime \prime }+2 x^{\prime }+x = 0 \]

[[_2nd_order, _missing_x]]

0.390

17102

\[ {}x^{\prime \prime }+{x^{\prime }}^{2}+x = 0 \]

[[_2nd_order, _missing_x]]

2.022

17103

\[ {}x^{\prime \prime }-2 {x^{\prime }}^{2}+x^{\prime }-2 x = 0 \]

[[_2nd_order, _missing_x]]

2.055

17104

\[ {}x^{\prime \prime }-x \,{\mathrm e}^{x^{\prime }} = 0 \]

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

0.999

17105

\[ {}x^{\prime \prime }+{\mathrm e}^{-x^{\prime }}-x = 0 \]

[[_2nd_order, _missing_x]]

3.197

17106

\[ {}x^{\prime \prime }+x {x^{\prime }}^{2} = 0 \]

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

0.621

17107

\[ {}x^{\prime \prime }+\left (x+2\right ) x^{\prime } = 0 \]

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

1.316

17108

\[ {}x^{\prime \prime }-x^{\prime }+x-x^{2} = 0 \]

[[_2nd_order, _missing_x]]

2.143

17109

\[ {}y^{\prime \prime }+\lambda y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

1.544

17110

\[ {}y^{\prime \prime }+\lambda y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

1.450

17111

\[ {}y^{\prime \prime }-y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

2.314

17112

\[ {}y^{\prime \prime }+y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

2.011

17113

\[ {}y y^{\prime \prime }+1+{y^{\prime }}^{2} = 0 \]
i.c.

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

2.395

17114

\[ {}y^{\prime \prime }+y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

1.262

17115

\[ {}y^{\prime \prime }-y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

2.171

17116

\[ {}y^{\prime \prime }-2 y^{\prime }+2 y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

0.557

17117

\[ {}y^{\prime \prime }+\alpha y^{\prime } = 0 \]
i.c.

[[_2nd_order, _missing_x]]

1.105

17118

\[ {}y^{\prime \prime }+\alpha ^{2} y = 1 \]
i.c.

[[_2nd_order, _missing_x]]

1.116

17119

\[ {}y^{\prime \prime }+y = 1 \]
i.c.

[[_2nd_order, _missing_x]]

1.253

17120

\[ {}y^{\prime \prime }+\lambda ^{2} y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

1.332

17121

\[ {}y^{\prime \prime }+\lambda ^{2} y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

1.162

17122

\[ {}y^{\prime \prime \prime }+y^{\prime \prime }-y^{\prime }-y = 0 \]
i.c.

[[_3rd_order, _missing_x]]

0.179

17123

\[ {}y^{\prime \prime \prime \prime }-\lambda ^{4} y = 0 \]
i.c.

[[_high_order, _missing_x]]

0.195

17124

\[ {}x y^{\prime \prime }+y^{\prime } = 0 \]

[[_2nd_order, _missing_y]]

0.804

17125

\[ {}x^{2} y^{\prime \prime \prime \prime }+4 x y^{\prime \prime \prime }+2 y^{\prime \prime } = 0 \]
i.c.

[[_high_order, _missing_y]]

0.132

17126

\[ {}x^{3} y^{\prime \prime \prime \prime }+6 x^{2} y^{\prime \prime \prime }+6 x y^{\prime \prime } = 0 \]
i.c.

[[_high_order, _missing_y]]

0.279

17127

\[ {}y^{\prime } = 1-x y \]
i.c.

[_linear]

0.402

17128

\[ {}y^{\prime } = \frac {y-x}{x +y} \]
i.c.

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

0.333

17129

\[ {}y^{\prime } = y \sin \left (x \right ) \]
i.c.

[_separable]

0.586

17130

\[ {}y^{\prime \prime }+x y = 0 \]
i.c.

[[_Emden, _Fowler]]

0.353

17131

\[ {}y^{\prime \prime }-y^{\prime } \sin \left (x \right ) = 0 \]
i.c.

[[_2nd_order, _missing_y]]

0.669

17132

\[ {}x y^{\prime \prime }+y \sin \left (x \right ) = x \]
i.c.

[[_2nd_order, _linear, _nonhomogeneous]]

2.144

17133

\[ {}\ln \left (x \right ) y^{\prime \prime }-y \sin \left (x \right ) = 0 \]
i.c.

[[_2nd_order, _with_linear_symmetries]]

5.831

17134

\[ {}y^{\prime \prime \prime }+x \sin \left (y\right ) = 0 \]
i.c.

[NONE]

0.052

17135

\[ {}y^{\prime }-2 x y = 0 \]
i.c.

[_separable]

0.402

17136

\[ {}y^{\prime \prime }+y^{\prime } x +y = 0 \]

[[_2nd_order, _exact, _linear, _homogeneous]]

0.364

17137

\[ {}y^{\prime \prime }-y^{\prime } x +y = 1 \]
i.c.

[[_2nd_order, _with_linear_symmetries]]

0.407

17138

\[ {}y^{\prime \prime }-\left (x^{2}+1\right ) y = 0 \]
i.c.

[[_2nd_order, _with_linear_symmetries]]

0.439

17139

\[ {}y^{\prime \prime } = x^{2} y-y^{\prime } \]
i.c.

[[_2nd_order, _with_linear_symmetries]]

0.506

17140

\[ {}y^{\prime \prime }-y \,{\mathrm e}^{x} = 0 \]

[[_2nd_order, _with_linear_symmetries]]

0.572

17141

\[ {}y^{\prime } = {\mathrm e}^{y}+x y \]
i.c.

[‘y=_G(x,y’)‘]

0.491

17142

\[ {}4 x y^{\prime \prime }+2 y^{\prime }+y = 0 \]

[[_Emden, _Fowler], [_2nd_order, _linear, ‘_with_symmetry_[0,F(x)]‘]]

0.688

17143

\[ {}\left (x +1\right ) y^{\prime }-n y = 0 \]

[_separable]

0.399

17144

\[ {}9 x \left (1-x \right ) y^{\prime \prime }-12 y^{\prime }+4 y = 0 \]

[_Jacobi]

0.736

17145

\[ {}x^{2} y^{\prime \prime }+y^{\prime } x +\left (4 x^{2}-\frac {1}{9}\right ) y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

0.559

17146

\[ {}x^{2} y^{\prime \prime }+y^{\prime } x +\left (x^{2}-\frac {1}{4}\right ) y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

0.670

17147

\[ {}y^{\prime \prime }+\frac {y^{\prime }}{x}+\frac {y}{9} = 0 \]

[[_2nd_order, _with_linear_symmetries]]

0.567

17148

\[ {}y^{\prime \prime }+\frac {y^{\prime }}{x}+4 y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

0.546

17149

\[ {}x^{2} y^{\prime \prime }-2 y^{\prime } x +4 \left (x^{4}-1\right ) y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

0.605

17150

\[ {}x y^{\prime \prime }+\frac {y^{\prime }}{2}+\frac {y}{4} = 0 \]

[[_Emden, _Fowler], [_2nd_order, _linear, ‘_with_symmetry_[0,F(x)]‘]]

0.812

17151

\[ {}y^{\prime \prime }+\frac {5 y^{\prime }}{x}+y = 0 \]

[_Lienard]

0.543

17152

\[ {}y^{\prime \prime }+\frac {3 y^{\prime }}{x}+4 y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

0.510

17153

\[ {}y^{\prime \prime }+4 y = \cos \left (x \right )^{2} \]

[[_2nd_order, _linear, _nonhomogeneous]]

0.864

17154

\[ {}y^{\prime \prime }-4 y^{\prime }+4 y = \pi ^{2}-x^{2} \]

[[_2nd_order, _with_linear_symmetries]]

0.622

17155

\[ {}y^{\prime \prime }-4 y = \cos \left (\pi x \right ) \]

[[_2nd_order, _linear, _nonhomogeneous]]

0.744

17156

\[ {}y^{\prime \prime }-4 y^{\prime }+4 y = \arcsin \left (\sin \left (x \right )\right ) \]

[[_2nd_order, _linear, _nonhomogeneous]]

1.818

17157

\[ {}y^{\prime \prime }+9 y = \sin \left (x \right )^{3} \]

[[_2nd_order, _linear, _nonhomogeneous]]

1.075

17158

\[ {}\left [\begin {array}{c} x_{1}^{\prime }=-2 t x_{1}^{2} \\ x_{2}^{\prime }=\frac {x_{2}+t}{t} \end {array}\right ] \]

system_of_ODEs

0.067

17159

\[ {}\left [\begin {array}{c} x_{1}^{\prime }={\mathrm e}^{t -x_{1}} \\ x_{2}^{\prime }=2 \,{\mathrm e}^{x_{1}} \end {array}\right ] \]

system_of_ODEs

0.061

17160

\[ {}\left [\begin {array}{c} x^{\prime }=y \\ y^{\prime }=\frac {y^{2}}{x} \end {array}\right ] \]

system_of_ODEs

0.067

17161

\[ {}\left [\begin {array}{c} x_{1}^{\prime }=\frac {x_{1}^{2}}{x_{2}} \\ x_{2}^{\prime }=-x_{1}+x_{2} \end {array}\right ] \]

system_of_ODEs

0.058

17162

\[ {}\left [\begin {array}{c} x^{\prime }=\frac {{\mathrm e}^{-x}}{t} \\ y^{\prime }=\frac {x \,{\mathrm e}^{-y}}{t} \end {array}\right ] \]

system_of_ODEs

0.068

17163

\[ {}\left [\begin {array}{c} x^{\prime }=\frac {t +y}{x+y} \\ y^{\prime }=\frac {x-t}{x+y} \end {array}\right ] \]

system_of_ODEs

0.064

17164

\[ {}\left [\begin {array}{c} x^{\prime }=\frac {t -y}{-x+y} \\ y^{\prime }=\frac {x-t}{-x+y} \end {array}\right ] \]

system_of_ODEs

0.066

17165

\[ {}\left [\begin {array}{c} x^{\prime }=\frac {t +y}{x+y} \\ y^{\prime }=\frac {t +x}{x+y} \end {array}\right ] \]

system_of_ODEs

0.065

17166

\[ {}\left [\begin {array}{c} x^{\prime }=-9 y \\ y^{\prime }=x \end {array}\right ] \]

system_of_ODEs

0.397

17167

\[ {}\left [\begin {array}{c} x^{\prime }=t +y \\ y^{\prime }=x-t \end {array}\right ] \]

system_of_ODEs

0.480

17168

\[ {}\left [\begin {array}{c} x^{\prime }+3 x+4 y=0 \\ y^{\prime }+2 x+5 y=0 \end {array}\right ] \]
i.c.

system_of_ODEs

0.536

17169

\[ {}\left [\begin {array}{c} x^{\prime }=x+5 y \\ y^{\prime }=-x-3 y \end {array}\right ] \]
i.c.

system_of_ODEs

0.589

17170

\[ {}\left [\begin {array}{c} 4 x^{\prime }-y^{\prime }+3 x=\sin \left (t \right ) \\ x^{\prime }+y=\cos \left (t \right ) \end {array}\right ] \]

system_of_ODEs

0.878

17171

\[ {}\left [\begin {array}{c} x^{\prime }=-y+z \\ y^{\prime }=z \\ z^{\prime }=-x+z \end {array}\right ] \]

system_of_ODEs

0.627

17172

\[ {}\left [\begin {array}{c} x^{\prime }=y+z \\ y^{\prime }=x+z \\ z^{\prime }=x+y \end {array}\right ] \]

system_of_ODEs

0.455

17173

\[ {}\left [\begin {array}{c} x^{\prime \prime }=y \\ y^{\prime \prime }=x \end {array}\right ] \]

system_of_ODEs

0.044

17174

\[ {}\left [\begin {array}{c} x^{\prime \prime }+y^{\prime }+x=0 \\ x^{\prime }+y^{\prime \prime }=0 \end {array}\right ] \]

system_of_ODEs

0.053

17175

\[ {}\left [\begin {array}{c} x^{\prime \prime }=3 x+y \\ y^{\prime }=-2 x \end {array}\right ] \]

system_of_ODEs

0.047

17176

\[ {}\left [\begin {array}{c} x^{\prime \prime }=x^{2}+y \\ y^{\prime }=-2 x x^{\prime }+x \end {array}\right ] \]
i.c.

system_of_ODEs

0.036

17177

\[ {}\left [\begin {array}{c} x^{\prime }=x^{2}+y^{2} \\ y^{\prime }=2 x y \end {array}\right ] \]

system_of_ODEs

0.057

17178

\[ {}\left [\begin {array}{c} x^{\prime }=-\frac {1}{y} \\ y^{\prime }=\frac {1}{x} \end {array}\right ] \]

system_of_ODEs

0.058

17179

\[ {}\left [\begin {array}{c} x^{\prime }=\frac {x}{y} \\ y^{\prime }=\frac {y}{x} \end {array}\right ] \]

system_of_ODEs

0.059

17180

\[ {}\left [\begin {array}{c} x^{\prime }=\frac {y}{x-y} \\ y^{\prime }=\frac {x}{x-y} \end {array}\right ] \]

system_of_ODEs

0.064

17181

\[ {}\left [\begin {array}{c} x^{\prime }=\sin \left (x\right ) \cos \left (y\right ) \\ y^{\prime }=\cos \left (x\right ) \sin \left (y\right ) \end {array}\right ] \]

system_of_ODEs

0.063

17182

\[ {}\left [\begin {array}{c} {\mathrm e}^{t} x^{\prime }=\frac {1}{y} \\ {\mathrm e}^{t} y^{\prime }=\frac {1}{x} \end {array}\right ] \]

system_of_ODEs

0.077

17183

\[ {}\left [\begin {array}{c} x^{\prime }=\cos \left (x\right )^{2} \cos \left (y\right )^{2}+\sin \left (x\right )^{2} \cos \left (y\right )^{2} \\ y^{\prime }=-\frac {\sin \left (2 x\right ) \sin \left (2 y\right )}{2} \end {array}\right ] \]
i.c.

system_of_ODEs

0.073

17184

\[ {}\left [\begin {array}{c} x^{\prime }=8 y-x \\ y^{\prime }=x+y \end {array}\right ] \]

system_of_ODEs

0.336

17185

\[ {}\left [\begin {array}{c} x^{\prime }=x-y \\ y^{\prime }=-x+y \end {array}\right ] \]

system_of_ODEs

0.301

17186

\[ {}\left [\begin {array}{c} x^{\prime }=2 x+y \\ y^{\prime }=x-3 y \end {array}\right ] \]
i.c.

system_of_ODEs

0.644

17187

\[ {}\left [\begin {array}{c} x^{\prime }=x+y \\ y^{\prime }=-2 x+4 y \end {array}\right ] \]
i.c.

system_of_ODEs

0.537

17188

\[ {}\left [\begin {array}{c} x^{\prime }=4 x-5 y \\ y^{\prime }=x \end {array}\right ] \]
i.c.

system_of_ODEs

0.610

17189

\[ {}\left [\begin {array}{c} x^{\prime }=y+z-x \\ y^{\prime }=x-y+z \\ z^{\prime }=x+y-z \end {array}\right ] \]

system_of_ODEs

0.449

17190

\[ {}\left [\begin {array}{c} x^{\prime }=2 x-y+z \\ y^{\prime }=x+2 y-z \\ z^{\prime }=x-y+2 z \end {array}\right ] \]

system_of_ODEs

0.480

17191

\[ {}\left [\begin {array}{c} x^{\prime }=2 x-y+z \\ y^{\prime }=x+z \\ z^{\prime }=y-2 z-3 x \end {array}\right ] \]
i.c.

system_of_ODEs

0.583

17192

\[ {}\left [\begin {array}{c} x^{\prime }+2 x-y=-{\mathrm e}^{2 t} \\ y^{\prime }+3 x-2 y=6 \,{\mathrm e}^{2 t} \end {array}\right ] \]

system_of_ODEs

0.876

17193

\[ {}\left [\begin {array}{c} x^{\prime }=x+y-\cos \left (t \right ) \\ y^{\prime }=-y-2 x+\cos \left (t \right )+\sin \left (t \right ) \end {array}\right ] \]
i.c.

system_of_ODEs

1.322

17194

\[ {}\left [\begin {array}{c} x^{\prime }=y+\tan \left (t \right )^{2}-1 \\ y^{\prime }=\tan \left (t \right )-x \end {array}\right ] \]

system_of_ODEs

1.125

17195

\[ {}\left [\begin {array}{c} x^{\prime }=-4 x-2 y+\frac {2}{{\mathrm e}^{t}-1} \\ y^{\prime }=6 x+3 y-\frac {3}{{\mathrm e}^{t}-1} \end {array}\right ] \]

system_of_ODEs

0.081

17196

\[ {}\left [\begin {array}{c} x^{\prime }=y \\ y^{\prime }=-x+\frac {1}{\cos \left (t \right )} \end {array}\right ] \]

system_of_ODEs

0.821

17197

\[ {}\left [\begin {array}{c} x^{\prime }=y \\ y^{\prime }=1-x \end {array}\right ] \]

system_of_ODEs

0.559

17198

\[ {}\left [\begin {array}{c} x^{\prime }=3-2 y \\ y^{\prime }=2 x-2 t \end {array}\right ] \]

system_of_ODEs

0.670

17199

\[ {}\left [\begin {array}{c} x^{\prime }=-y+\sin \left (t \right ) \\ y^{\prime }=x+\cos \left (t \right ) \end {array}\right ] \]

system_of_ODEs

0.745

17200

\[ {}\left [\begin {array}{c} x^{\prime }=x+y+{\mathrm e}^{t} \\ y^{\prime }=x+y-{\mathrm e}^{t} \end {array}\right ] \]

system_of_ODEs

0.538