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]]

0.313

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]]

0.366

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

0.385

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

0.034

26005

\begin{align*} y^{\prime \prime }+y^{\prime }&=0 \\ \end{align*}
Series expansion around \(x=0\).

[[_2nd_order, _missing_x]]

0.396

26006

\begin{align*} y^{\prime \prime }-y^{\prime } x +y&=0 \\ \end{align*}
Series expansion around \(x=0\).

[_Hermite]

0.435

26007

\begin{align*} y^{\prime \prime }-y x&=0 \\ \end{align*}
Series expansion around \(x=0\).

[[_Emden, _Fowler]]

0.379

26008

\begin{align*} y^{\prime \prime }+y^{\prime } x +3 y&=x^{2} \\ \end{align*}
Series expansion around \(x=0\).

[[_2nd_order, _linear, _nonhomogeneous]]

0.537

26009

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

[[_2nd_order, _with_linear_symmetries]]

0.417

26010

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

[_Gegenbauer]

0.474

26011

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

[_Gegenbauer]

0.497

26012

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

[[_2nd_order, _with_linear_symmetries]]

0.556

26013

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

[[_2nd_order, _missing_y]]

0.434

26014

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

[[_2nd_order, _missing_y]]

0.505

26015

\begin{align*} y^{\prime \prime }-y x&=0 \\ \end{align*}
Series expansion around \(x=0\).

[[_Emden, _Fowler]]

0.360

26016

\begin{align*} y^{\prime \prime }-y&=0 \\ \end{align*}
Series expansion around \(x=0\).

[[_2nd_order, _missing_x]]

0.371

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]]

1.003

26018

\begin{align*} y^{\prime \prime }+y^{\prime }+y&=0 \\ \end{align*}
Series expansion around \(x=0\).

[[_2nd_order, _missing_x]]

0.440

26019

\begin{align*} y^{\prime \prime }+3 y^{\prime } x +7 y&=0 \\ \end{align*}
Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.514

26020

\begin{align*} y^{\prime \prime }-y^{\prime } x -y&=0 \\ \end{align*}
Series expansion around \(x=0\).

[[_2nd_order, _exact, _linear, _homogeneous]]

0.461

26021

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

[[_2nd_order, _with_linear_symmetries]]

1.131

26022

\begin{align*} 4 y^{\prime \prime } x +3 y^{\prime }-3 y&=0 \\ \end{align*}
Series expansion around \(x=0\).

[[_Emden, _Fowler]]

1.047

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]]

1.082

26024

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

[_Lienard]

0.996

26025

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

[[_2nd_order, _exact, _linear, _homogeneous]]

0.539

26026

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

[[_2nd_order, _exact, _linear, _homogeneous]]

1.003

26027

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

[[_2nd_order, _with_linear_symmetries]]

1.104

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]]

0.977

26029

\begin{align*} 2 y^{\prime \prime } x +y^{\prime }-2 y&=0 \\ \end{align*}
Series expansion around \(x=0\).

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

1.095

26030

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

[[_2nd_order, _with_linear_symmetries]]

1.191

26031

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

[[_2nd_order, _with_linear_symmetries]]

1.194

26032

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

[[_2nd_order, _with_linear_symmetries]]

0.903

26033

\begin{align*} y^{\prime \prime } x -y^{\prime }+4 x^{3} y&=0 \\ \end{align*}
Series expansion around \(x=0\).

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

0.891

26034

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

[[_2nd_order, _exact, _linear, _homogeneous]]

1.080

26035

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

[_Jacobi]

4.045

26036

\begin{align*} y^{\prime \prime } x +y^{\prime }-y x&=0 \\ \end{align*}
Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.757

26037

\begin{align*} y^{\prime \prime } x +y^{\prime }+y&=0 \\ \end{align*}
Series expansion around \(x=0\).

[[_Emden, _Fowler]]

0.922

26038

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

[[_2nd_order, _exact, _linear, _nonhomogeneous]]

1.058

26039

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

[[_3rd_order, _missing_y]]

0.375

26040

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

[[_2nd_order, _with_linear_symmetries]]

20.076

26041

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

[[_2nd_order, _missing_y]]

1.386

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]]

0.412

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]]

0.510

26044

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

[[_2nd_order, _with_linear_symmetries]]

1.056

26045

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

[[_2nd_order, _linear, _nonhomogeneous]]

0.964

26046

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

[[_2nd_order, _with_linear_symmetries]]

0.142

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]]

0.173

26048

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

[[_2nd_order, _with_linear_symmetries]]

0.285

26049

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

[_separable]

0.539

26050

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

[_quadrature]

0.408

26051

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

[_quadrature]

0.309

26052

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

[_quadrature]

3.382

26053

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

[_quadrature]

95.386

26054

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

[[_2nd_order, _missing_y]]

1.207

26055

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

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

0.615

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]]

2.430

26057

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

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

3.112

26058

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

[[_2nd_order, _missing_y]]

1.365

26059

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

[[_2nd_order, _missing_x]]

22.479

26060

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

[[_1st_order, _with_linear_symmetries], _Clairaut]

0.606

26061

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

[_separable]

3.977

26062

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

[[_1st_order, _with_linear_symmetries], _Clairaut]

0.820

26063

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

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

2.536

26064

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

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

1.408

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

0.754

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

0.898

26067

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

system_of_ODEs

0.431

26068

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

system_of_ODEs

0.882

26069

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

system_of_ODEs

0.730

26070

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

system_of_ODEs

0.539

26071

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

system_of_ODEs

0.714

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

0.871

26073

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

system_of_ODEs

0.432

26074

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

system_of_ODEs

0.611

26075

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

system_of_ODEs

0.430

26076

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

[[_linear, ‘class A‘]]

1.868

26077

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

[_separable]

3.562

26078

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

[_separable]

4.097

26079

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

[_separable]

5.747

26080

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

[_separable]

4.411

26081

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

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

27.168

26082

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

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

14.489

26083

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

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

19.829

26084

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

[_linear]

3.928

26085

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

[_linear]

3.065

26086

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

[_Bernoulli]

7.560

26087

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

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

56.869

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]‘]]

3.522

26089

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

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

5.434

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‘]]

5.740

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‘]]

31.488

26092

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

[[_1st_order, _with_linear_symmetries], _dAlembert]

6.947

26093

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

[[_2nd_order, _missing_y]]

1.289

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]]

1.460

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]]

6.357

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]]

3.833

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]]

6.418

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]]

3.888

26099

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

[[_2nd_order, _missing_x]]

0.434

26100

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

[[_2nd_order, _missing_x]]

0.326