2.2.261 Problems 26001 to 26100

Table 2.539: Main lookup table. Sorted sequentially by problem number.

#

ODE

CAS classification

Solved?

Maple

Mma

Sympy

time(sec)

26001

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

Using Laplace transform method.

[[_3rd_order, _missing_x]]

1.642

26002

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

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.201

26003

\begin{align*} x^{\prime }+y&=3 \,{\mathrm e}^{2 t} \\ x+y^{\prime }&=0 \\ \end{align*}

With initial conditions

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

system_of_ODEs

0.162

26004

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

With initial conditions

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

system_of_ODEs

0.025

26005

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

Series expansion around \(x=0\).

[[_2nd_order, _missing_x]]

0.309

26006

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

Series expansion around \(x=0\).

[_Hermite]

0.270

26007

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

Series expansion around \(x=0\).

[[_Emden, _Fowler]]

0.275

26008

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

Series expansion around \(x=0\).

[[_2nd_order, _linear, _nonhomogeneous]]

0.367

26009

\begin{align*} \left (x^{2}+1\right ) y^{\prime \prime }-4 x y^{\prime }+6 y&=0 \\ \end{align*}

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.276

26010

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

Series expansion around \(x=0\).

[_Gegenbauer]

0.311

26011

\begin{align*} \left (x^{2}-1\right ) y^{\prime \prime }-6 y&=0 \\ \end{align*}

Series expansion around \(x=0\).

[_Gegenbauer]

0.316

26012

\begin{align*} \left (x^{2}+1\right ) y^{\prime \prime }+6 x y^{\prime }+6 y&=0 \\ \end{align*}

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.375

26013

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

Series expansion around \(x=0\).

[[_2nd_order, _missing_y]]

0.295

26014

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

Series expansion around \(x=0\).

[[_2nd_order, _missing_y]]

0.354

26015

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

Series expansion around \(x=0\).

[[_Emden, _Fowler]]

0.237

26016

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

Series expansion around \(x=0\).

[[_2nd_order, _missing_x]]

0.250

26017

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

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.808

26018

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

Series expansion around \(x=0\).

[[_2nd_order, _missing_x]]

0.279

26019

\begin{align*} y^{\prime \prime }+3 x y^{\prime }+7 y&=0 \\ \end{align*}

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.326

26020

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

Series expansion around \(x=0\).

[[_2nd_order, _exact, _linear, _homogeneous]]

0.309

26021

\begin{align*} 2 x y^{\prime \prime }+5 \left (2 x +1\right ) y^{\prime }+5 y&=0 \\ \end{align*}

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.937

26022

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

Series expansion around \(x=0\).

[[_Emden, _Fowler]]

0.809

26023

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

Series expansion around \(x=0\).

[[_2nd_order, _exact, _linear, _homogeneous]]

0.845

26024

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

Series expansion around \(x=0\).

[_Lienard]

0.745

26025

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

Series expansion around \(x=0\).

[[_2nd_order, _exact, _linear, _homogeneous]]

0.353

26026

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

Series expansion around \(x=0\).

[[_2nd_order, _exact, _linear, _homogeneous]]

0.702

26027

\begin{align*} 2 x^{2} y^{\prime \prime }+5 x y^{\prime }+\left (x +1\right ) y&=0 \\ \end{align*}

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.936

26028

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

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.806

26029

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

Series expansion around \(x=0\).

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

0.829

26030

\begin{align*} x \left (x +1\right ) y^{\prime \prime }+\left (5+x \right ) y^{\prime }-4 y&=0 \\ \end{align*}

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.911

26031

\begin{align*} x \left (1-2 x \right ) y^{\prime \prime }-2 \left (x +2\right ) y^{\prime }+8 y&=0 \\ \end{align*}

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.925

26032

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

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.731

26033

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

Series expansion around \(x=0\).

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

0.600

26034

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

Series expansion around \(x=0\).

[[_2nd_order, _exact, _linear, _homogeneous]]

0.860

26035

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

Series expansion around \(x=0\).

[_Jacobi]

1.629

26036

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

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.491

26037

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

Series expansion around \(x=0\).

[[_Emden, _Fowler]]

0.582

26038

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

[[_2nd_order, _exact, _linear, _nonhomogeneous]]

0.870

26039

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

[[_3rd_order, _missing_y]]

0.349

26040

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

[[_2nd_order, _with_linear_symmetries]]

4.729

26041

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

[[_2nd_order, _missing_y]]

1.115

26042

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

[[_3rd_order, _missing_y]]

0.346

26043

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

[[_2nd_order, _with_linear_symmetries]]

0.352

26044

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

[[_2nd_order, _with_linear_symmetries]]

0.601

26045

\begin{align*} y^{\prime \prime }+2 x y^{\prime }+\left (x^{2}-8\right ) y&=x^{2} {\mathrm e}^{-\frac {x^{2}}{2}} \\ \end{align*}

[[_2nd_order, _linear, _nonhomogeneous]]

0.858

26046

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

[[_2nd_order, _with_linear_symmetries]]

0.108

26047

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

[[_2nd_order, _with_linear_symmetries]]

0.148

26048

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

[[_2nd_order, _with_linear_symmetries]]

0.238

26049

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

[_separable]

0.562

26050

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

[_quadrature]

0.313

26051

\begin{align*} {y^{\prime }}^{2}-y^{\prime }-6&=0 \\ \end{align*}

[_quadrature]

0.221

26052

\begin{align*} {y^{\prime }}^{3}&=a \,x^{4} \\ \end{align*}

[_quadrature]

1.632

26053

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

[_quadrature]

80.839

26054

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

[[_2nd_order, _missing_y]]

0.725

26055

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

[[_2nd_order, _missing_y], [_2nd_order, _reducible, _mu_y_y1]]

0.316

26056

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

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

1.252

26057

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

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

1.003

26058

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

[[_2nd_order, _missing_y]]

1.011

26059

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

[[_2nd_order, _missing_x]]

13.437

26060

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

[[_1st_order, _with_linear_symmetries], _Clairaut]

0.377

26061

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

[_separable]

2.705

26062

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

[[_1st_order, _with_linear_symmetries], _Clairaut]

0.490

26063

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

[[_homogeneous, ‘class G‘], _Clairaut]

1.174

26064

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

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

0.852

26065

\begin{align*} y_{1}^{\prime }&=3 y_{1}+6 y_{2} \\ y_{2}^{\prime }&=2 y_{1}-6 y_{2} \\ \end{align*}

system_of_ODEs

0.642

26066

\begin{align*} y_{1}^{\prime }&=2 y_{1} \\ y_{2}^{\prime }&=3 y_{1}-2 y_{2} \\ y_{3}^{\prime }&=2 y_{2}+3 y_{3} \\ \end{align*}

system_of_ODEs

0.753

26067

\begin{align*} y_{1}^{\prime }&=y_{2} \\ y_{2}^{\prime }&=-y_{1}+2 y_{2} \\ \end{align*}

system_of_ODEs

0.352

26068

\begin{align*} y^{\prime }&=y+z-w \\ z^{\prime }&=y-z+w \\ w^{\prime }&=-y+z+w \\ \end{align*}

system_of_ODEs

0.741

26069

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

system_of_ODEs

0.576

26070

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

system_of_ODEs

0.430

26071

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

system_of_ODEs

0.536

26072

\begin{align*} y^{\prime }&=-3 y+z-w \\ z^{\prime }&=5 y-z-7 w \\ w^{\prime }&=-y+z-3 w \\ \end{align*}

system_of_ODEs

0.776

26073

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

system_of_ODEs

0.349

26074

\begin{align*} y_{1}^{\prime }&=y_{1}+y_{2} \\ y_{2}^{\prime }&=y_{1}-y_{2} \\ \end{align*}

system_of_ODEs

0.520

26075

\begin{align*} y_{1}^{\prime }&=4 y_{1}-y_{2} \\ y_{2}^{\prime }&=y_{1}+2 y_{2} \\ \end{align*}

system_of_ODEs

0.354

26076

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

[[_linear, ‘class A‘]]

1.227

26077

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

[_separable]

2.582

26078

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

[_separable]

3.042

26079

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

[_separable]

3.747

26080

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

[_separable]

3.844

26081

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

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

15.232

26082

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

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

7.483

26083

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

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

8.429

26084

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

[_linear]

2.637

26085

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

[_linear]

1.895

26086

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

[_Bernoulli]

3.254

26087

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

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

62.950

26088

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

[[_1st_order, ‘_with_symmetry_[F(x)*G(y),0]‘]]

1.993

26089

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

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

2.921

26090

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

[_exact, _rational, [_1st_order, ‘_with_symmetry_[F(x),G(x)]‘], [_Abel, ‘2nd type‘, ‘class B‘]]

3.330

26091

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

[_exact, [_Abel, ‘2nd type‘, ‘class B‘]]

16.577

26092

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

[[_1st_order, _with_linear_symmetries], _dAlembert]

3.339

26093

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

[[_2nd_order, _missing_y]]

0.882

26094

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

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

0.450

26095

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

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

2.082

26096

\begin{align*} y^{\prime \prime }+18 \sin \left (y\right ) \cos \left (y\right )^{3}&=0 \\ y \left (0\right ) &= 0 \\ y^{\prime }\left (0\right ) &= 3 \\ \end{align*}

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

2.337

26097

\begin{align*} y^{\prime \prime }&=18 y^{3} \\ y \left (1\right ) &= 1 \\ y^{\prime }\left (1\right ) &= 3 \\ \end{align*}

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

1.968

26098

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

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

2.684

26099

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

[[_2nd_order, _missing_x]]

0.309

26100

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

[[_2nd_order, _missing_x]]

0.246