2.2.220 Problems 21901 to 22000

Table 2.457: Main lookup table. Sorted sequentially by problem number.

#

ODE

CAS classification

Solved?

Maple

Mma

Sympy

time(sec)

21901

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

Series expansion around \(x=0\).

[[_2nd_order, _missing_y]]

0.592

21902

\begin{align*} \left (2 x^{2}+1\right ) y^{\prime \prime }+3 x y^{\prime }-6 y&=0 \\ \end{align*}

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.697

21903

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

Series expansion around \(x=0\).

[[_2nd_order, _exact, _linear, _homogeneous]]

1.273

21904

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

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

1.030

21905

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

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

1.128

21906

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

Series expansion around \(x=0\).

[[_Riccati, _special]]

0.434

21907

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

Series expansion around \(x=0\).

[[_Emden, _Fowler]]

0.921

21908

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

Series expansion around \(x=0\).

[_Bessel]

1.243

21909

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

Using Laplace transform method.

[[_2nd_order, _missing_x]]

0.407

21910

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

Using Laplace transform method.

[[_2nd_order, _missing_x]]

0.299

21911

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

Using Laplace transform method.

[[_2nd_order, _missing_x]]

0.288

21912

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

Using Laplace transform method.

[[_2nd_order, _missing_x]]

0.332

21913

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

Using Laplace transform method.

[[_2nd_order, _missing_x]]

0.351

21914

\begin{align*} y^{\prime \prime }-2 y^{\prime }-3 y&=2 \,{\mathrm e}^{-t} \\ y \left (0\right ) &= {\frac {3}{2}} \\ y^{\prime }\left (0\right ) &= 2 \\ \end{align*}

Using Laplace transform method.

[[_2nd_order, _with_linear_symmetries]]

0.394

21915

\begin{align*} y^{\prime \prime }+9 y&=5 \cos \left (2 t \right ) \\ y \left (0\right ) &= 2 \\ y^{\prime }\left (0\right ) &= 3 \\ \end{align*}

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.470

21916

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

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.467

21917

\begin{align*} y^{\prime \prime \prime \prime }-4 y^{\prime \prime }&=0 \\ y \left (0\right ) &= 5 \\ y^{\prime }\left (0\right ) &= 2 \\ y^{\prime \prime }\left (0\right ) &= 8 \\ y^{\prime \prime \prime }\left (0\right ) &= 0 \\ \end{align*}

Using Laplace transform method.

[[_high_order, _missing_x]]

0.500

21918

\begin{align*} y^{\prime \prime \prime \prime }-2 y^{\prime \prime \prime }-2 y^{\prime }+y&=0 \\ y \left (0\right ) &= 3 \\ y^{\prime }\left (0\right ) &= 1 \\ y^{\prime \prime }\left (0\right ) &= -3 \\ y^{\prime \prime \prime }\left (0\right ) &= -5 \\ \end{align*}

Using Laplace transform method.

[[_high_order, _missing_x]]

2.143

21919

\begin{align*} y^{\prime \prime \prime \prime }-y&=0 \\ y \left (0\right ) &= 0 \\ y^{\prime }\left (0\right ) &= 3 \\ y^{\prime \prime }\left (0\right ) &= -4 \\ y^{\prime \prime \prime }\left (0\right ) &= 12 \\ \end{align*}

Using Laplace transform method.

[[_high_order, _missing_x]]

0.520

21920

\begin{align*} y^{\prime \prime }+4 y&=t \sin \left (t \right ) \\ y \left (0\right ) &= {\frac {7}{9}} \\ y^{\prime }\left (0\right ) &= -{\frac {5}{2}} \\ \end{align*}

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.563

21921

\begin{align*} 4 y+y^{\prime \prime }&=x \sin \left (x \right ) \\ y \left (0\right ) &= {\frac {7}{9}} \\ y \left (\frac {\pi }{2}\right ) &= \frac {\pi }{6}-1 \\ \end{align*}

[[_2nd_order, _linear, _nonhomogeneous]]

0.928

21922

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

[[_2nd_order, _missing_x]]

27.915

21923

\begin{align*} y^{\prime \prime }-2 y^{\prime }-3 y+8 \,{\mathrm e}^{-x}+3 x&=0 \\ y \left (0\right ) &= -{\frac {2}{3}} \\ y \left (1\right ) &= 2 \,{\mathrm e}^{-1}+\frac {1}{3} \\ \end{align*}

[[_2nd_order, _with_linear_symmetries]]

1.734

21924

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

With initial conditions

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

system_of_ODEs

1.382

21925

\begin{align*} x^{\prime \prime }&=1 \\ x^{\prime }+x+y^{\prime \prime }-9 y+z^{\prime }+z&=0 \\ 5 x+z^{\prime \prime }-4 z&=2 \\ \end{align*}

With initial conditions

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

system_of_ODEs

0.049

21926

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

[_separable]

10.346

21927

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

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

21.909

21928

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

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

51.662

21929

\begin{align*} \left (x^{3}+3\right ) y^{\prime }+2 y x +5 x^{2}&=0 \\ y \left (2\right ) &= 1 \\ \end{align*}

[_linear]

50.286

21930

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

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

12.069

21931

\begin{align*} y^{\prime \prime }+6 y^{\prime }+9 y&=0 \\ \end{align*}

[[_2nd_order, _missing_x]]

0.460

21932

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

[[_2nd_order, _missing_x]]

1.224

21933

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

[[_2nd_order, _linear, _nonhomogeneous]]

0.767

21934

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

[[_2nd_order, _missing_y]]

1.382

21935

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

[[_2nd_order, _missing_x]]

0.481

21936

\begin{align*} x y^{\prime \prime }+y^{\prime }&=16 x^{3} \\ \end{align*}

[[_2nd_order, _missing_y]]

1.725

21937

\begin{align*} y^{\prime \prime \prime }-7 y^{\prime \prime }+12 y^{\prime }&=0 \\ \end{align*}

[[_3rd_order, _missing_x]]

0.083

21938

\begin{align*} y^{\prime \prime }+4 y^{\prime }+13 y&=0 \\ \end{align*}

[[_2nd_order, _missing_x]]

0.511

21939

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

[[_3rd_order, _missing_y]]

0.242

21940

\begin{align*} y^{\prime }-3 z&=5 \\ y-z^{\prime }-x&=3-2 t \\ z+x^{\prime }&=-1 \\ \end{align*}

system_of_ODEs

1.372

21941

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

[[_3rd_order, _linear, _nonhomogeneous]]

0.463

21942

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

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.604

21943

\begin{align*} \left (x^{2}+1\right ) y^{\prime \prime }-8 x y^{\prime }+20 y&=0 \\ \end{align*}

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.707

21944

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

system_of_ODEs

0.856

21945

\begin{align*} y^{\prime \prime }+4 y&=2 t -8 \\ y \left (0\right ) &= 1 \\ y^{\prime }\left (0\right ) &= 0 \\ \end{align*}

Using Laplace transform method.

[[_2nd_order, _with_linear_symmetries]]

0.558

21946

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

Using Laplace transform method.

[[_2nd_order, _missing_x]]

0.358

21947

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

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.468

21948

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

Using Laplace transform method.

[[_3rd_order, _missing_x]]

0.477

21949

\begin{align*} y^{\prime \prime \prime }-5 x y^{\prime }&=1+{\mathrm e}^{x} \\ \end{align*}

[[_3rd_order, _missing_y]]

1.585

21950

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

[[_2nd_order, _missing_y]]

2.304

21951

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

[[_2nd_order, _reducible, _mu_x_y1], [_2nd_order, _reducible, _mu_xy]]

2.386

21952

\begin{align*} 5 {b^{\prime \prime \prime \prime }}^{5}+7 {b^{\prime }}^{10}+b^{7}-b^{5}&=p \\ \end{align*}

[NONE]

0.309

21953

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

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

3.728

21954

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

[NONE]

0.096

21955

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

[[_high_order, _missing_y]]

0.893

21956

\begin{align*} t^{2} s^{\prime \prime }-t s^{\prime }&=1-\sin \left (t \right ) \\ \end{align*}

[[_2nd_order, _missing_y]]

1.332

21957

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

[NONE]

0.065

21958

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

[[_2nd_order, _missing_y]]

127.533

21959

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

[[_2nd_order, _with_linear_symmetries], [_2nd_order, _reducible, _mu_x_y1], [_2nd_order, _reducible, _mu_y_y1]]

0.365

21960

\begin{align*} b^{\left (7\right )}&=3 p \\ \end{align*}

[[_high_order, _quadrature]]

0.223

21961

\begin{align*} {b^{\prime }}^{7}&=3 p \\ \end{align*}

[_quadrature]

8.191

21962

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

[[_2nd_order, _missing_x]]

0.477

21963

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

[[_2nd_order, _with_linear_symmetries]]

0.675

21964

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

[[_2nd_order, _missing_y]]

1.533

21965

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

[_separable]

11.209

21966

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

[_quadrature]

2.730

21967

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

[[_2nd_order, _missing_x]]

2.931

21968

\begin{align*} 4 y+y^{\prime \prime }&=0 \\ y \left (\frac {\pi }{8}\right ) &= 0 \\ y \left (\frac {\pi }{6}\right ) &= 1 \\ \end{align*}

[[_2nd_order, _missing_x]]

3.651

21969

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

[[_2nd_order, _missing_x]]

46.419

21970

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

[[_2nd_order, _missing_x]]

4.119

21971

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

[[_2nd_order, _with_linear_symmetries]]

0.685

21972

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

[_linear]

3.127

21973

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

[‘y=_G(x,y’)‘]

16.209

21974

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

[_quadrature]

1.378

21975

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

[[_Riccati, _special]]

8.059

21976

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

[_linear]

5.139

21977

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

[_separable]

5.119

21978

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

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

35.874

21979

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

[_linear]

2.469

21980

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

[_separable]

4.453

21981

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

[_quadrature]

0.352

21982

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

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

142.749

21983

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

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

20.576

21984

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

[_separable]

0.425

21985

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

[_quadrature]

39.456

21986

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

[_separable]

5.540

21987

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

[_linear]

2.494

21988

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

[_separable]

15.181

21989

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

[_separable]

7.689

21990

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

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

14.697

21991

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

[_separable]

8.061

21992

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

[_separable]

13.472

21993

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

[_quadrature]

2.199

21994

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

[_separable]

3.655

21995

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

[_separable]

5.832

21996

\begin{align*} x \cos \left (x \right )+\left (1-6 y^{5}\right ) y^{\prime }&=0 \\ y \left (\pi \right ) &= 0 \\ \end{align*}

[_separable]

5.171

21997

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

[_separable]

12.655

21998

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

[_separable]

5.012

21999

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

[_quadrature]

0.924

22000

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

[_separable]

5.390