2.2.221 Problems 22001 to 22100

Table 2.459: Main lookup table. Sorted sequentially by problem number.

#

ODE

CAS classification

Solved?

Maple

Mma

Sympy

time(sec)

22001

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

[_separable]

3.141

22002

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

[_separable]

3.898

22003

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

[_separable]

4.755

22004

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

[_separable]

2.684

22005

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

[_separable]

2.440

22006

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

[_separable]

2.309

22007

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

[_separable]

3.271

22008

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

[_linear]

2.568

22009

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

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

104.487

22010

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

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

14.910

22011

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

[_separable]

3.190

22012

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

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

147.332

22013

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

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

153.859

22014

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

[_linear]

3.935

22015

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

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

8.183

22016

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

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

6.486

22017

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

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

7.826

22018

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

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

1.635

22019

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

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

9.927

22020

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

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

43.922

22021

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

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

107.987

22022

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

[_separable]

2.763

22023

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

[_exact]

3.474

22024

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

[_linear]

2.168

22025

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

[‘x=_G(y,y’)‘]

26.127

22026

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

[_separable]

2.221

22027

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

[_exact, _rational, [_1st_order, ‘_with_symmetry_[F(x)*G(y),0]‘], [_Abel, ‘2nd type‘, ‘class A‘]]

3.613

22028

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

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

2.662

22029

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

[_separable]

0.270

22030

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

[_separable]

0.444

22031

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

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

0.605

22032

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

[_separable]

3.219

22033

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

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

12.729

22034

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

[_separable]

19.566

22035

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

[_separable]

2.554

22036

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

[_separable]

2.941

22037

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

[_rational]

2.651

22038

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

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

7.954

22039

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

[_separable]

2.304

22040

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

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

3.187

22041

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

[_separable]

0.272

22042

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

[_separable]

3.237

22043

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

[_separable]

2.362

22044

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

[[_homogeneous, ‘class D‘], _rational, _Riccati]

2.079

22045

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

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

4.134

22046

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

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

4.652

22047

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

[_separable]

2.519

22048

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

[_separable]

3.483

22049

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

[_separable]

0.332

22050

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

[_separable]

3.391

22051

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

[_separable]

4.430

22052

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

[_separable]

0.480

22053

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

[_separable]

0.281

22054

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

[[_homogeneous, ‘class D‘], _rational, _Riccati]

4.544

22055

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

[_rational]

3.356

22056

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

[_separable]

0.706

22057

\begin{align*} y^{\prime }-3 y&=6 \\ \end{align*}

[_quadrature]

0.942

22058

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

[_separable]

2.306

22059

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

[_linear]

3.343

22060

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

[[_linear, ‘class A‘]]

2.065

22061

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

[_quadrature]

1.230

22062

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

[[_linear, ‘class A‘]]

2.589

22063

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

[_separable]

3.782

22064

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

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

8.307

22065

\begin{align*} y^{\prime }-7 y&={\mathrm e}^{x} \\ \end{align*}

[[_linear, ‘class A‘]]

1.580

22066

\begin{align*} y^{\prime }-7 y&=14 x \\ \end{align*}

[[_linear, ‘class A‘]]

1.338

22067

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

[[_linear, ‘class A‘]]

2.625

22068

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

[_separable]

2.527

22069

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

[_linear]

3.585

22070

\begin{align*} y^{\prime }+6 y x&=0 \\ y \left (\pi \right ) &= 5 \\ \end{align*}

[_separable]

2.710

22071

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

[_separable]

2.448

22072

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

[_quadrature]

0.436

22073

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

[_linear]

3.134

22074

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

[_quadrature]

1.117

22075

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

[_separable]

4.305

22076

\begin{align*} y^{\prime }+\frac {2 y}{x}&=-x^{9} y^{5} \\ y \left (-1\right ) &= 2 \\ \end{align*}

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

5.847

22077

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

[[_2nd_order, _with_linear_symmetries]]

63.063

22078

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

[[_3rd_order, _exact, _nonlinear]]

0.048

22079

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

[[_2nd_order, _missing_x]]

1.987

22080

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

[_linear]

1.992

22081

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

[[_2nd_order, _with_linear_symmetries]]

30.376

22082

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

[[_2nd_order, _with_linear_symmetries]]

0.405

22083

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

[[_3rd_order, _with_linear_symmetries]]

0.127

22084

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

[_quadrature]

1.227

22085

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

[[_high_order, _linear, _nonhomogeneous]]

0.081

22086

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

[NONE]

2.089

22087

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

[_separable]

2.624

22088

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

[[_2nd_order, _exact, _nonlinear], [_2nd_order, _reducible, _mu_x_y1], [_2nd_order, _reducible, _mu_y_y1], [_2nd_order, _reducible, _mu_xy]]

146.366

22089

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

[[_3rd_order, _linear, _nonhomogeneous]]

0.080

22090

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

[_separable]

4.074

22091

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

[_separable]

3.898

22092

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

[_quadrature]

2.040

22093

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

[[_2nd_order, _missing_x]]

0.290

22094

\begin{align*} y^{\prime \prime }-7 y^{\prime }&=0 \\ \end{align*}

[[_2nd_order, _missing_x]]

0.921

22095

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

[[_2nd_order, _missing_x]]

2.188

22096

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

[[_2nd_order, _missing_x]]

0.370

22097

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

[[_2nd_order, _missing_x]]

1.569

22098

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

[[_2nd_order, _missing_x]]

0.395

22099

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

[[_2nd_order, _missing_x]]

0.352

22100

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

[[_2nd_order, _quadrature]]

0.546