2.2.140 Problems 13901 to 14000

Table 2.281: Main lookup table. Sorted sequentially by problem number.

#

ODE

CAS classification

Solved?

time (sec)

13901

\[ {}y^{\prime }+y = t^{3}+\sin \left (3 t \right ) \]

[[_linear, ‘class A‘]]

1.477

13902

\[ {}y^{\prime }-3 y = 2 t -{\mathrm e}^{4 t} \]

[[_linear, ‘class A‘]]

1.057

13903

\[ {}y^{\prime }+y = \cos \left (2 t \right )+3 \sin \left (2 t \right )+{\mathrm e}^{-t} \]

[[_linear, ‘class A‘]]

1.681

13904

\[ {}y^{\prime } = -\frac {y}{t}+2 \]

[_linear]

1.599

13905

\[ {}y^{\prime } = \frac {3 y}{t}+t^{5} \]

[_linear]

1.157

13906

\[ {}y^{\prime } = -\frac {y}{1+t}+t^{2} \]

[_linear]

1.441

13907

\[ {}y^{\prime } = -2 t y+4 \,{\mathrm e}^{-t^{2}} \]

[_linear]

1.233

13908

\[ {}y^{\prime }-\frac {2 t y}{t^{2}+1} = 3 \]

[_linear]

1.312

13909

\[ {}y^{\prime }-\frac {2 y}{t} = t^{3} {\mathrm e}^{t} \]

[_linear]

1.252

13910

\[ {}y^{\prime } = -\frac {y}{1+t}+2 \]
i.c.

[_linear]

1.602

13911

\[ {}y^{\prime } = \frac {y}{1+t}+4 t^{2}+4 t \]
i.c.

[_linear]

1.123

13912

\[ {}y^{\prime } = -\frac {y}{t}+2 \]
i.c.

[_linear]

2.078

13913

\[ {}y^{\prime } = -2 t y+4 \,{\mathrm e}^{-t^{2}} \]
i.c.

[_linear]

1.487

13914

\[ {}y^{\prime }-\frac {2 y}{t} = 2 t^{2} \]
i.c.

[_linear]

1.276

13915

\[ {}y^{\prime }-\frac {3 y}{t} = 2 t^{3} {\mathrm e}^{2 t} \]
i.c.

[_linear]

2.113

13916

\[ {}y^{\prime } = \sin \left (t \right ) y+4 \]

[_linear]

1.546

13917

\[ {}y^{\prime } = t^{2} y+4 \]

[_linear]

1.178

13918

\[ {}y^{\prime } = \frac {y}{t^{2}}+4 \cos \left (t \right ) \]

[_linear]

1.859

13919

\[ {}y^{\prime } = y+4 \cos \left (t^{2}\right ) \]

[[_linear, ‘class A‘]]

1.381

13920

\[ {}y^{\prime } = -y \,{\mathrm e}^{-t^{2}}+\cos \left (t \right ) \]

[_linear]

2.575

13921

\[ {}y^{\prime } = \frac {y}{\sqrt {t^{3}-3}}+t \]

[_linear]

22.526

13922

\[ {}y^{\prime } = a t y+4 \,{\mathrm e}^{-t^{2}} \]

[_linear]

1.090

13923

\[ {}y^{\prime } = t^{r} y+4 \]

[_linear]

1.286

13924

\[ {}v^{\prime }+\frac {2 v}{5} = 3 \cos \left (2 t \right ) \]

[[_linear, ‘class A‘]]

1.322

13925

\[ {}y^{\prime } = -2 t y+4 \,{\mathrm e}^{-t^{2}} \]

[_linear]

1.240

13926

\[ {}y^{\prime }+2 y = 3 \,{\mathrm e}^{-2 t} \]

[[_linear, ‘class A‘]]

0.842

13927

\[ {}y^{\prime } = 3 y \]

[_quadrature]

0.536

13928

\[ {}y^{\prime } = t^{2} \left (t^{2}+1\right ) \]

[_quadrature]

0.240

13929

\[ {}y^{\prime } = -\sin \left (y\right )^{5} \]

[_quadrature]

0.799

13930

\[ {}y^{\prime } = \frac {\left (t^{2}-4\right ) \left (y+1\right ) {\mathrm e}^{y}}{\left (t -1\right ) \left (3-y\right )} \]

[_separable]

2.214

13931

\[ {}y^{\prime } = \sin \left (y\right )^{2} \]

[_quadrature]

0.508

13932

\[ {}y^{\prime } = \left (y-3\right ) \left (\sin \left (y\right ) \sin \left (t \right )+\cos \left (t \right )+1\right ) \]
i.c.

[‘x=_G(y,y’)‘]

3.572

13933

\[ {}y^{\prime } = y+{\mathrm e}^{-t} \]

[[_linear, ‘class A‘]]

0.881

13934

\[ {}y^{\prime } = 3-2 y \]

[_quadrature]

0.525

13935

\[ {}y^{\prime } = t y \]

[_separable]

0.993

13936

\[ {}y^{\prime } = 3 y+{\mathrm e}^{7 t} \]

[[_linear, ‘class A‘]]

0.912

13937

\[ {}y^{\prime } = \frac {t y}{t^{2}+1} \]

[_separable]

1.121

13938

\[ {}y^{\prime } = -5 y+\sin \left (3 t \right ) \]

[[_linear, ‘class A‘]]

1.178

13939

\[ {}y^{\prime } = t +\frac {2 y}{1+t} \]

[_linear]

0.940

13940

\[ {}y^{\prime } = 3+y^{2} \]

[_quadrature]

0.438

13941

\[ {}y^{\prime } = 2 y-y^{2} \]

[_quadrature]

0.784

13942

\[ {}y^{\prime } = -3 y+{\mathrm e}^{-2 t}+t^{2} \]

[[_linear, ‘class A‘]]

1.493

13943

\[ {}x^{\prime } = -x t \]
i.c.

[_separable]

1.479

13944

\[ {}y^{\prime } = 2 y+\cos \left (4 t \right ) \]
i.c.

[[_linear, ‘class A‘]]

1.380

13945

\[ {}y^{\prime } = 3 y+2 \,{\mathrm e}^{3 t} \]
i.c.

[[_linear, ‘class A‘]]

1.092

13946

\[ {}y^{\prime } = t^{2} y^{3}+y^{3} \]
i.c.

[_separable]

1.827

13947

\[ {}y^{\prime }+5 y = 3 \,{\mathrm e}^{-5 t} \]
i.c.

[[_linear, ‘class A‘]]

1.094

13948

\[ {}y^{\prime } = 2 t y+3 t \,{\mathrm e}^{t^{2}} \]
i.c.

[_linear]

2.344

13949

\[ {}y^{\prime } = \frac {\left (1+t \right )^{2}}{\left (y+1\right )^{2}} \]
i.c.

[_separable]

3.768

13950

\[ {}y^{\prime } = 2 t y^{2}+3 t^{2} y^{2} \]
i.c.

[_separable]

1.741

13951

\[ {}y^{\prime } = 1-y^{2} \]
i.c.

[_quadrature]

0.902

13952

\[ {}y^{\prime } = \frac {t^{2}}{y+t^{3} y} \]
i.c.

[_separable]

1.209

13953

\[ {}y^{\prime } = y^{2}-2 y+1 \]
i.c.

[_quadrature]

0.401

13954

\[ {}y^{\prime } = \left (y-2\right ) \left (y+1-\cos \left (t \right )\right ) \]

[_Riccati]

3.211

13955

\[ {}y^{\prime } = \left (y-1\right ) \left (y-2\right ) \left (y-{\mathrm e}^{\frac {t}{2}}\right ) \]

[_Abel]

1.124

13956

\[ {}y^{\prime } = t^{2} y+1+y+t^{2} \]

[_separable]

1.063

13957

\[ {}y^{\prime } = \frac {2 y+1}{t} \]

[_separable]

1.440

13958

\[ {}y^{\prime } = 3-y^{2} \]
i.c.

[_quadrature]

0.559

13959

\[ {}\left [\begin {array}{c} x^{\prime }=x-y \\ y^{\prime }=x-y \end {array}\right ] \]

system_of_ODEs

0.227

13960

\[ {}\left [\begin {array}{c} x^{\prime }=2 x-y \\ y^{\prime }=0 \end {array}\right ] \]

system_of_ODEs

0.264

13961

\[ {}\left [\begin {array}{c} x^{\prime }=x \\ y^{\prime }=2 x+y \end {array}\right ] \]

system_of_ODEs

0.242

13962

\[ {}\left [\begin {array}{c} x^{\prime }=-x+2 y \\ y^{\prime }=2 x-y \end {array}\right ] \]

system_of_ODEs

0.290

13963

\[ {}\left [\begin {array}{c} x^{\prime }=2 x+y \\ y^{\prime }=x+y \end {array}\right ] \]

system_of_ODEs

0.483

13964

\[ {}\left [\begin {array}{c} x^{\prime }=3 y \\ y^{\prime }=3 \pi y-\frac {x}{3} \end {array}\right ] \]

system_of_ODEs

0.612

13965

\[ {}\left [\begin {array}{c} p^{\prime }=3 p-2 q-7 r \\ q^{\prime }=-2 p+6 r \\ r^{\prime }=\frac {73 q}{100}+2 r \end {array}\right ] \]

system_of_ODEs

56.109

13966

\[ {}\left [\begin {array}{c} x^{\prime }=-3 x+2 \pi y \\ y^{\prime }=4 x-y \end {array}\right ] \]

system_of_ODEs

0.569

13967

\[ {}\left [\begin {array}{c} x^{\prime }=\beta y \\ y^{\prime }=\gamma x-y \end {array}\right ] \]

system_of_ODEs

0.494

13968

\[ {}\left [\begin {array}{c} x^{\prime }=2 y \\ y^{\prime }=x+y \end {array}\right ] \]
i.c.

system_of_ODEs

0.403

13969

\[ {}\left [\begin {array}{c} x^{\prime }=x-y \\ y^{\prime }=x+3 y \end {array}\right ] \]
i.c.

system_of_ODEs

0.378

13970

\[ {}\left [\begin {array}{c} x^{\prime }=-2 x-y \\ y^{\prime }=2 x-5 y \end {array}\right ] \]
i.c.

system_of_ODEs

0.406

13971

\[ {}\left [\begin {array}{c} x^{\prime }=-2 x-3 y \\ y^{\prime }=3 x-2 y \end {array}\right ] \]
i.c.

system_of_ODEs

0.470

13972

\[ {}\left [\begin {array}{c} x^{\prime }=2 x+3 y \\ y^{\prime }=x \end {array}\right ] \]
i.c.

system_of_ODEs

0.454

13973

\[ {}\left [\begin {array}{c} x^{\prime }=1 \\ y^{\prime }=x \end {array}\right ] \]

system_of_ODEs

0.293

13974

\[ {}\left [\begin {array}{c} x^{\prime }=3 x \\ y^{\prime }=-2 y \end {array}\right ] \]

system_of_ODEs

0.241

13975

\[ {}\left [\begin {array}{c} x^{\prime }=-4 x-2 y \\ y^{\prime }=-x-3 y \end {array}\right ] \]

system_of_ODEs

0.295

13976

\[ {}\left [\begin {array}{c} x^{\prime }=-5 x-2 y \\ y^{\prime }=-x-4 y \end {array}\right ] \]

system_of_ODEs

0.295

13977

\[ {}\left [\begin {array}{c} x^{\prime }=2 x+y \\ y^{\prime }=-x+4 y \end {array}\right ] \]

system_of_ODEs

0.262

13978

\[ {}\left [\begin {array}{c} x^{\prime }=-\frac {x}{2} \\ y^{\prime }=x-\frac {y}{2} \end {array}\right ] \]

system_of_ODEs

0.251

13979

\[ {}\left [\begin {array}{c} x^{\prime }=5 x+4 y \\ y^{\prime }=9 x \end {array}\right ] \]

system_of_ODEs

0.308

13980

\[ {}\left [\begin {array}{c} x^{\prime }=3 x+4 y \\ y^{\prime }=x \end {array}\right ] \]

system_of_ODEs

0.291

13981

\[ {}\left [\begin {array}{c} x^{\prime }=2 x-y \\ y^{\prime }=-x+y \end {array}\right ] \]

system_of_ODEs

0.471

13982

\[ {}\left [\begin {array}{c} x^{\prime }=2 x+y \\ y^{\prime }=x+y \end {array}\right ] \]

system_of_ODEs

0.480

13983

\[ {}\left [\begin {array}{c} x^{\prime }=-x-2 y \\ y^{\prime }=x-4 y \end {array}\right ] \]

system_of_ODEs

0.297

13984

\[ {}\left [\begin {array}{c} x^{\prime }=-2 x-2 y \\ y^{\prime }=-2 x+y \end {array}\right ] \]
i.c.

system_of_ODEs

0.478

13985

\[ {}\left [\begin {array}{c} x^{\prime }=-2 x-2 y \\ y^{\prime }=-2 x+y \end {array}\right ] \]
i.c.

system_of_ODEs

0.419

13986

\[ {}\left [\begin {array}{c} x^{\prime }=-2 x-2 y \\ y^{\prime }=-2 x+y \end {array}\right ] \]
i.c.

system_of_ODEs

0.419

13987

\[ {}\left [\begin {array}{c} x^{\prime }=3 x \\ y^{\prime }=x-2 y \end {array}\right ] \]
i.c.

system_of_ODEs

0.391

13988

\[ {}\left [\begin {array}{c} x^{\prime }=3 x \\ y^{\prime }=x-2 y \end {array}\right ] \]
i.c.

system_of_ODEs

0.377

13989

\[ {}\left [\begin {array}{c} x^{\prime }=3 x \\ y^{\prime }=x-2 y \end {array}\right ] \]
i.c.

system_of_ODEs

0.407

13990

\[ {}\left [\begin {array}{c} x^{\prime }=-4 x+y \\ y^{\prime }=2 x-3 y \end {array}\right ] \]
i.c.

system_of_ODEs

0.476

13991

\[ {}\left [\begin {array}{c} x^{\prime }=-4 x+y \\ y^{\prime }=2 x-3 y \end {array}\right ] \]
i.c.

system_of_ODEs

0.416

13992

\[ {}\left [\begin {array}{c} x^{\prime }=-4 x+y \\ y^{\prime }=2 x-3 y \end {array}\right ] \]
i.c.

system_of_ODEs

0.399

13993

\[ {}\left [\begin {array}{c} x^{\prime }=4 x-2 y \\ y^{\prime }=x+y \end {array}\right ] \]
i.c.

system_of_ODEs

0.392

13994

\[ {}\left [\begin {array}{c} x^{\prime }=4 x-2 y \\ y^{\prime }=x+y \end {array}\right ] \]
i.c.

system_of_ODEs

0.385

13995

\[ {}\left [\begin {array}{c} x^{\prime }=4 x-2 y \\ y^{\prime }=x+y \end {array}\right ] \]
i.c.

system_of_ODEs

0.394

13996

\[ {}\left [\begin {array}{c} x^{\prime }=2 y \\ y^{\prime }=-2 x \end {array}\right ] \]
i.c.

system_of_ODEs

0.434

13997

\[ {}\left [\begin {array}{c} x^{\prime }=2 x+2 y \\ y^{\prime }=-4 x+6 y \end {array}\right ] \]
i.c.

system_of_ODEs

0.477

13998

\[ {}\left [\begin {array}{c} x^{\prime }=-3 x-5 y \\ y^{\prime }=3 x+y \end {array}\right ] \]
i.c.

system_of_ODEs

0.641

13999

\[ {}\left [\begin {array}{c} x^{\prime }=2 y \\ y^{\prime }=-2 x-y \end {array}\right ] \]
i.c.

system_of_ODEs

0.655

14000

\[ {}\left [\begin {array}{c} x^{\prime }=2 x-6 y \\ y^{\prime }=2 x+y \end {array}\right ] \]
i.c.

system_of_ODEs

0.651