2.2.210 Problems 20901 to 21000

Table 2.437: Main lookup table. Sorted sequentially by problem number.

#

ODE

CAS classification

Solved?

Maple

Mma

Sympy

time(sec)

20901

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

[[_Emden, _Fowler]]

0.280

20902

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

[[_2nd_order, _with_linear_symmetries]]

5.806

20903

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

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

1.177

20904

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

[[_Emden, _Fowler]]

0.679

20905

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

[_Lienard]

0.996

20906

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

[[_2nd_order, _with_linear_symmetries]]

1.087

20907

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

[[_2nd_order, _with_linear_symmetries]]

0.983

20908

\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]]

1.222

20909

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

[[_2nd_order, _with_linear_symmetries]]

0.863

20910

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

[_Laguerre]

1.277

20911

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

[[_2nd_order, _with_linear_symmetries]]

0.602

20912

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

[[_Emden, _Fowler]]

0.431

20913

\begin{align*} y^{\prime \prime }-5 y^{\prime }+6 y&=0 \\ y \left (0\right ) &= 2 \\ y^{\prime }\left (0\right ) &= 0 \\ \end{align*}
Using Laplace transform method.

[[_2nd_order, _missing_x]]

0.401

20914

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

[[_2nd_order, _missing_x]]

0.388

20915

\begin{align*} y^{\prime \prime }-y&={\mathrm e}^{2 t} t \\ y \left (0\right ) &= 0 \\ y^{\prime }\left (0\right ) &= 1 \\ \end{align*}
Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.470

20916

\begin{align*} y^{\prime \prime }-3 y^{\prime }-4 y&=t^{2} \\ y \left (0\right ) &= 2 \\ y^{\prime }\left (0\right ) &= 1 \\ \end{align*}
Using Laplace transform method.

[[_2nd_order, _with_linear_symmetries]]

0.497

20917

\begin{align*} y^{\prime \prime }-3 y^{\prime }-2 y&={\mathrm e}^{t} \\ y \left (0\right ) &= 1 \\ y^{\prime }\left (0\right ) &= 0 \\ \end{align*}
Using Laplace transform method.

[[_2nd_order, _with_linear_symmetries]]

0.521

20918

\begin{align*} y^{\prime \prime }+4 y&=\delta \left (t -1\right ) \\ y \left (0\right ) &= 3 \\ y^{\prime }\left (0\right ) &= 0 \\ \end{align*}
Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

2.365

20919

\begin{align*} y^{\prime \prime }-4 y^{\prime }+13 y&=\delta \left (t -1\right ) \\ y \left (0\right ) &= 0 \\ y^{\prime }\left (0\right ) &= 2 \\ \end{align*}
Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

3.118

20920

\begin{align*} y^{\prime \prime }+6 y^{\prime }+18 y&=2 \operatorname {Heaviside}\left (\pi -t \right ) \\ y \left (0\right ) &= 0 \\ y^{\prime }\left (0\right ) &= 0 \\ \end{align*}
Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

4.236

20921

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

system_of_ODEs

0.603

20922

\begin{align*} x^{\prime }&=-4 x-y+{\mathrm e}^{-t} \\ y^{\prime }&=x-2 y+2 \,{\mathrm e}^{-3 t} \\ \end{align*}
With initial conditions
\begin{align*} x \left (0\right ) &= 2 \\ y \left (0\right ) &= -1 \\ \end{align*}

system_of_ODEs

0.529

20923

\begin{align*} x^{\prime }&=x-y+2 \cos \left (t \right ) \\ y^{\prime }&=x+y+3 \sin \left (t \right ) \\ \end{align*}
With initial conditions
\begin{align*} x \left (0\right ) &= 3 \\ y \left (0\right ) &= 2 \\ \end{align*}

system_of_ODEs

0.545

20924

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

system_of_ODEs

0.422

20925

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

system_of_ODEs

0.390

20926

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

system_of_ODEs

0.615

20927

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

system_of_ODEs

0.622

20928

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

system_of_ODEs

0.363

20929

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

system_of_ODEs

0.575

20930

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

system_of_ODEs

0.770

20931

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

system_of_ODEs

0.569

20932

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

system_of_ODEs

0.364

20933

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

system_of_ODEs

0.536

20934

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

system_of_ODEs

0.419

20935

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

system_of_ODEs

0.555

20936

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

system_of_ODEs

0.463

20937

\begin{align*} x^{\prime }&=12 x-15 y \\ y^{\prime }&=4 x-4 y \\ \end{align*}
With initial conditions
\begin{align*} x \left (0\right ) &= 1 \\ y \left (0\right ) &= 0 \\ \end{align*}

system_of_ODEs

0.576

20938

\begin{align*} x^{\prime }&=2 x-y \\ y^{\prime }&=5 x-2 y \\ \end{align*}

system_of_ODEs

0.567

20939

\begin{align*} x^{\prime }&=4 x-13 y \\ y^{\prime }&=2 x-6 y \\ \end{align*}
With initial conditions
\begin{align*} x \left (0\right ) &= 2 \\ y \left (0\right ) &= 0 \\ \end{align*}

system_of_ODEs

0.803

20940

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

system_of_ODEs

0.538

20941

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

system_of_ODEs

0.710

20942

\begin{align*} x^{\prime }&=8 x-5 y \\ y^{\prime }&=16 x+8 y \\ \end{align*}
With initial conditions
\begin{align*} x \left (0\right ) &= 1 \\ y \left (0\right ) &= -1 \\ \end{align*}

system_of_ODEs

0.723

20943

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

system_of_ODEs

0.450

20944

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

system_of_ODEs

0.802

20945

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

system_of_ODEs

1.006

20946

\begin{align*} x^{\prime }&=5 x+3 y+1 \\ y^{\prime }&=-6 x-4 y+{\mathrm e}^{t} \\ \end{align*}
With initial conditions
\begin{align*} x \left (0\right ) &= 1 \\ y \left (0\right ) &= 0 \\ \end{align*}

system_of_ODEs

0.849

20947

\begin{align*} x^{\prime }&=2 x-y+\cos \left (t \right ) \\ y^{\prime }&=5 x-2 y+\sin \left (t \right ) \\ \end{align*}
With initial conditions
\begin{align*} x \left (0\right ) &= 0 \\ y \left (0\right ) &= 1 \\ \end{align*}

system_of_ODEs

1.093

20948

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

[_quadrature]

17.855

20949

\begin{align*} y^{\prime }&=y^{2}-6 y-16 \\ \end{align*}

[_quadrature]

1.480

20950

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

[_quadrature]

22.379

20951

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

[_quadrature]

3.111

20952

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

[_quadrature]

134.757

20953

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

[_quadrature]

2.645

20954

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

[_quadrature]

2.717

20955

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

[_quadrature]

3.042

20956

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

[_quadrature]

2.389

20957

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

[_quadrature]

2.582

20958

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

[_quadrature]

53.084

20959

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

[_quadrature]

9.605

20960

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

[_quadrature]

8.443

20961

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

[_quadrature]

50.878

20962

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

[[_homogeneous, ‘class C‘], _dAlembert]

9.806

20963

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

[[_homogeneous, ‘class C‘], _dAlembert]

10.210

20964

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

[[_homogeneous, ‘class C‘], _dAlembert]

27.671

20965

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

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

34.658

20966

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

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

129.204

20967

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

[_quadrature]

5.296

20968

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

[_quadrature]

3.439

20969

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

[_separable]

7.050

20970

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

[_separable]

10.938

20971

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

[_separable]

4.385

20972

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

[[_homogeneous, ‘class C‘], _Riccati]

7.493

20973

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

[_separable]

28.710

20974

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

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

17.944

20975

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

[_separable]

5.461

20976

\begin{align*} y^{\prime }-y+y^{2} {\mathrm e}^{x}+5 \,{\mathrm e}^{-x}&=0 \\ y \left (0\right ) &= \eta \\ \end{align*}

[[_1st_order, _with_linear_symmetries], _Riccati]

6.473

20977

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

[_exact]

4.596

20978

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

[_rational]

4.760

20979

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

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

10.428

20980

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

[_linear]

2.852

20981

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

[[_1st_order, _with_linear_symmetries], _Clairaut]

2.049

20982

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

[[_1st_order, _with_linear_symmetries], _Clairaut]

0.657

20983

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

[_separable]

5.459

20984

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

[_dAlembert]

26.575

20985

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

[_dAlembert]

1.908

20986

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

[‘y=_G(x,y’)‘]

1.177

20987

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

[_Abel]

0.295

20988

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

[_quadrature]

0.269

20989

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

[_Abel]

12.630

20990

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

[‘y=_G(x,y’)‘]

45.546

20991

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

system_of_ODEs

0.057

20992

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

system_of_ODEs

0.066

20993

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

system_of_ODEs

0.560

20994

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

system_of_ODEs

1.555

20995

\begin{align*} x^{\prime }&=8 x+y \\ y^{\prime }&=-4 x+4 y \\ \end{align*}

system_of_ODEs

0.501

20996

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

system_of_ODEs

0.810

20997

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

system_of_ODEs

0.935

20998

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

[[_2nd_order, _with_linear_symmetries]]

0.846

20999

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

[[_2nd_order, _with_linear_symmetries]]

0.763

21000

\begin{align*} u^{\prime \prime }+2 a u^{\prime }+\omega ^{2} u&=c \cos \left (\omega t \right ) \\ \end{align*}

[[_2nd_order, _linear, _nonhomogeneous]]

1.504