2.2.221 Problems 22001 to 22100

Table 2.455: 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]

1.709

22002

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

[_separable]

2.180

22003

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

[_separable]

1.873

22004

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

[_separable]

2.137

22005

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

[_separable]

1.537

22006

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

[_separable]

1.701

22007

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

[_separable]

2.517

22008

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

[_linear]

1.963

22009

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

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

5.367

22010

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

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

3.991

22011

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

[_separable]

2.615

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]

22.035

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]

12.379

22014

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

[_linear]

1.323

22015

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

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

3.600

22016

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

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

2.469

22017

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

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

3.699

22018

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

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

0.331

22019

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

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

5.819

22020

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

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

104.149

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]

4.875

22022

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

[_separable]

0.970

22023

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

[_exact]

2.603

22024

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

[_linear]

0.987

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’)‘]

23.582

22026

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

[_separable]

1.313

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‘]]

1.529

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)]‘]]

1.753

22029

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

[_separable]

0.082

22030

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

[_separable]

0.200

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]

0.220

22032

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

[_separable]

1.562

22033

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

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

4.290

22034

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

[_separable]

16.170

22035

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

[_separable]

1.357

22036

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

[_separable]

1.396

22037

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

[_rational]

1.679

22038

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

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

3.326

22039

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

[_separable]

1.516

22040

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

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

1.729

22041

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

[_separable]

0.074

22042

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

[_separable]

1.666

22043

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

[_separable]

1.474

22044

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

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

1.062

22045

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

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

1.681

22046

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

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

2.522

22047

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

[_separable]

1.554

22048

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

[_separable]

1.677

22049

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

[_separable]

0.143

22050

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

[_separable]

1.736

22051

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

[_separable]

2.542

22052

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

[_separable]

0.170

22053

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

[_separable]

0.072

22054

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

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

2.902

22055

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

[_rational]

2.387

22056

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

[_separable]

0.354

22057

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

[_quadrature]

0.364

22058

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

[_separable]

1.421

22059

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

[_linear]

1.783

22060

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

[[_linear, ‘class A‘]]

1.384

22061

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

[_quadrature]

0.443

22062

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

[[_linear, ‘class A‘]]

1.463

22063

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

[_separable]

2.315

22064

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

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

7.656

22065

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

[[_linear, ‘class A‘]]

0.910

22066

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

[[_linear, ‘class A‘]]

0.675

22067

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

[[_linear, ‘class A‘]]

1.572

22068

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

[_separable]

1.531

22069

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

[_linear]

2.040

22070

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

[_separable]

1.664

22071

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

[_separable]

1.539

22072

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

[_quadrature]

0.191

22073

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

[_linear]

1.829

22074

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

[_quadrature]

0.505

22075

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

[_separable]

2.320

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]

3.238

22077

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

[[_2nd_order, _with_linear_symmetries]]

0.819

22078

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

[[_3rd_order, _exact, _nonlinear]]

0.029

22079

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

[[_2nd_order, _missing_x]]

0.847

22080

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

[_linear]

1.485

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]]

0.438

22082

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

[[_2nd_order, _with_linear_symmetries]]

0.266

22083

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

[[_3rd_order, _with_linear_symmetries]]

0.093

22084

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

[_quadrature]

0.466

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]]

0.043

22086

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

[NONE]

0.136

22087

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

[_separable]

1.561

22088

\begin{align*} y^{\prime } y+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]]

88.207

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]]

0.039

22090

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

[_separable]

2.725

22091

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

[_separable]

2.034

22092

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

[_quadrature]

0.670

22093

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

[[_2nd_order, _missing_x]]

0.174

22094

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

[[_2nd_order, _missing_x]]

0.685

22095

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

[[_2nd_order, _missing_x]]

1.188

22096

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

[[_2nd_order, _missing_x]]

0.259

22097

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

[[_2nd_order, _missing_x]]

0.906

22098

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

[[_2nd_order, _missing_x]]

0.294

22099

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

[[_2nd_order, _missing_x]]

0.224

22100

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

[[_2nd_order, _quadrature]]

0.530