2.2.80 Problems 7901 to 8000

Table 2.161: Main lookup table. Sorted sequentially by problem number.

#

ODE

CAS classification

Solved?

time (sec)

7901

\[ {}y^{\prime \prime }+2 y^{\prime } = 0 \]

[[_2nd_order, _missing_x]]

1.385

7902

\[ {}y^{\prime \prime }-x y = 0 \]

[[_Emden, _Fowler]]

0.500

7903

\[ {}y^{\prime \prime }+x^{2} y = 0 \]

[[_Emden, _Fowler]]

0.509

7904

\[ {}y^{\prime \prime }-2 x y^{\prime }+y = 0 \]

[_Lienard]

0.615

7905

\[ {}y^{\prime \prime }-x y^{\prime }+2 y = 0 \]

[_Hermite]

0.584

7906

\[ {}y^{\prime \prime }+x^{2} y^{\prime }+x y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

0.623

7907

\[ {}y^{\prime \prime }+2 x y^{\prime }+2 y = 0 \]

[[_2nd_order, _exact, _linear, _homogeneous]]

0.618

7908

\[ {}\left (x -1\right ) y^{\prime \prime }+y^{\prime } = 0 \]

[[_2nd_order, _missing_y]]

0.561

7909

\[ {}\left (x +2\right ) y^{\prime \prime }+x y^{\prime }-y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

0.616

7910

\[ {}y^{\prime \prime }-\left (x +1\right ) y^{\prime }-y = 0 \]

[[_2nd_order, _exact, _linear, _homogeneous]]

0.665

7911

\[ {}\left (x^{2}+1\right ) y^{\prime \prime }-6 y = 0 \]

[[_Emden, _Fowler]]

0.629

7912

\[ {}\left (x^{2}+2\right ) y^{\prime \prime }+3 x y^{\prime }-y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

0.710

7913

\[ {}\left (x^{2}-1\right ) y^{\prime \prime }+x y^{\prime }-y = 0 \]

[[_2nd_order, _exact, _linear, _homogeneous]]

0.626

7914

\[ {}\left (x -1\right ) y^{\prime \prime }-x y^{\prime }+y = 0 \]
i.c.

[[_2nd_order, _with_linear_symmetries]]

0.536

7915

\[ {}\left (x +1\right ) y^{\prime \prime }-\left (2-x \right ) y^{\prime }+y = 0 \]
i.c.

[[_2nd_order, _exact, _linear, _homogeneous]]

0.659

7916

\[ {}y^{\prime \prime }-2 x y^{\prime }+8 y = 0 \]
i.c.

[[_2nd_order, _with_linear_symmetries]]

0.593

7917

\[ {}\left (x^{2}+1\right ) y^{\prime \prime }+2 x y^{\prime } = 0 \]
i.c.

[[_2nd_order, _missing_y]]

0.618

7918

\[ {}y^{\prime \prime }+y \sin \left (x \right ) = 0 \]

[[_2nd_order, _with_linear_symmetries]]

0.827

7919

\[ {}y^{\prime \prime }+{\mathrm e}^{x} y^{\prime }-y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

0.937

7920

\[ {}\cos \left (x \right ) y^{\prime \prime }+y^{\prime }+5 y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

2.414

7921

\[ {}\cos \left (x \right ) y^{\prime \prime }+y^{\prime }+5 y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

5.455

7922

\[ {}y^{\prime \prime }-x y = 1 \]

[[_2nd_order, _linear, _nonhomogeneous]]

0.519

7923

\[ {}y^{\prime \prime }-4 x y^{\prime }-4 y = {\mathrm e}^{x} \]

[[_2nd_order, _exact, _linear, _nonhomogeneous]]

0.702

7924

\[ {}x y^{\prime \prime }+y \sin \left (x \right ) = 0 \]

[[_2nd_order, _with_linear_symmetries]]

1.807

7925

\[ {}y^{\prime \prime }+5 x y^{\prime }+\sqrt {x}\, y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

0.144

7926

\[ {}y^{\prime \prime }+x y^{\prime }+y = 0 \]

[[_2nd_order, _exact, _linear, _homogeneous]]

0.611

7927

\[ {}y^{\prime \prime }+y \cos \left (x \right ) = 0 \]
i.c.

[[_2nd_order, _with_linear_symmetries]]

0.818

7928

\[ {}x^{3} y^{\prime \prime }+4 x^{2} y^{\prime }+3 y = 0 \]

[[_Emden, _Fowler]]

0.120

7929

\[ {}x \left (x +3\right )^{2} y^{\prime \prime }-y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

1.529

7930

\[ {}\left (x^{2}-9\right )^{2} y^{\prime \prime }+\left (x +3\right ) y^{\prime }+2 y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

0.880

7931

\[ {}y^{\prime \prime }-\frac {y^{\prime }}{x}+\frac {y}{\left (x -1\right )^{3}} = 0 \]

[[_2nd_order, _with_linear_symmetries]]

1.655

7932

\[ {}\left (x^{3}+4 x \right ) y^{\prime \prime }-2 x y^{\prime }+6 y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

1.526

7933

\[ {}x^{2} \left (x -5\right )^{2} y^{\prime \prime }+4 x y^{\prime }+\left (x^{2}-25\right ) y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

1.773

7934

\[ {}\left (x^{2}+x -6\right ) y^{\prime \prime }+\left (x +3\right ) y^{\prime }+\left (-2+x \right ) y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

0.805

7935

\[ {}x \left (x^{2}+1\right )^{2} y^{\prime \prime }+y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

1.395

7936

\[ {}x^{3} \left (x^{2}-25\right ) \left (-2+x \right )^{2} y^{\prime \prime }+3 x \left (-2+x \right ) y^{\prime }+7 \left (x +5\right ) y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

0.151

7937

\[ {}\left (x^{3}-2 x^{2}+3 x \right )^{2} y^{\prime \prime }+x \left (x -3\right )^{2} y^{\prime }-\left (x +1\right ) y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

1.454

7938

\[ {}\left (x^{2}-1\right ) y^{\prime \prime }+5 \left (x +1\right ) y^{\prime }+\left (x^{2}-x \right ) y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

0.875

7939

\[ {}x y^{\prime \prime }+\left (x +3\right ) y^{\prime }+7 x^{2} y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

1.369

7940

\[ {}x^{2} y^{\prime \prime }+\left (\frac {5}{3} x +x^{2}\right ) y^{\prime }-\frac {y}{3} = 0 \]

[[_2nd_order, _with_linear_symmetries]]

1.133

7941

\[ {}x y^{\prime \prime }+y^{\prime }+10 y = 0 \]

[[_Emden, _Fowler]]

0.829

7942

\[ {}2 x y^{\prime \prime }-y^{\prime }+2 y = 0 \]

[[_Emden, _Fowler]]

1.064

7943

\[ {}2 x y^{\prime \prime }+5 y^{\prime }+x y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

0.832

7944

\[ {}4 x y^{\prime \prime }+\frac {y^{\prime }}{2}+y = 0 \]

[[_Emden, _Fowler]]

1.044

7945

\[ {}2 x^{2} y^{\prime \prime }-x y^{\prime }+\left (x^{2}+1\right ) y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

0.954

7946

\[ {}3 x y^{\prime \prime }+\left (2-x \right ) y^{\prime }-y = 0 \]

[[_2nd_order, _exact, _linear, _homogeneous]]

1.020

7947

\[ {}x^{2} y^{\prime \prime }-\left (x -\frac {2}{9}\right ) y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

1.088

7948

\[ {}2 x y^{\prime \prime }-\left (2 x +3\right ) y^{\prime }+y = 0 \]

[_Laguerre]

1.046

7949

\[ {}x^{2} y^{\prime \prime }+x y^{\prime }+\left (x^{2}-\frac {4}{9}\right ) y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

0.948

7950

\[ {}9 x^{2} y^{\prime \prime }+9 x^{2} y^{\prime }+2 y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

1.145

7951

\[ {}2 x^{2} y^{\prime \prime }+3 x y^{\prime }+\left (2 x -1\right ) y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

1.203

7952

\[ {}x y^{\prime \prime }+2 y^{\prime }-x y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

0.848

7953

\[ {}x^{2} y^{\prime \prime }+x y^{\prime }+\left (x^{2}-\frac {1}{4}\right ) y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

0.973

7954

\[ {}x y^{\prime \prime }-x y^{\prime }+y = 0 \]

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

1.262

7955

\[ {}y^{\prime \prime }+\frac {3 y^{\prime }}{x}-2 y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

1.181

7956

\[ {}x y^{\prime \prime }+\left (1-x \right ) y^{\prime }-y = 0 \]

[[_2nd_order, _exact, _linear, _homogeneous]]

0.839

7957

\[ {}x y^{\prime \prime }+y^{\prime }+y = 0 \]

[[_Emden, _Fowler]]

0.837

7958

\[ {}x y^{\prime \prime }+\left (x -6\right ) y^{\prime }-3 y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

1.118

7959

\[ {}x \left (x -1\right ) y^{\prime \prime }+3 y^{\prime }-2 y = 0 \]

[[_2nd_order, _exact, _linear, _homogeneous]]

0.977

7960

\[ {}y^{\prime \prime }+\frac {2 y^{\prime }}{t}+\lambda y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

0.919

7961

\[ {}x^{3} y^{\prime \prime }+y = 0 \]

[[_Emden, _Fowler]]

0.110

7962

\[ {}x^{2} y^{\prime \prime }+\left (3 x -1\right ) y^{\prime }+y = 0 \]

[[_2nd_order, _exact, _linear, _homogeneous]]

0.171

7963

\[ {}x^{2} y^{\prime \prime }+x y^{\prime }+\left (x^{2}-\frac {1}{9}\right ) y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

2.038

7964

\[ {}x^{2} y^{\prime \prime }+x y^{\prime }+\left (x^{2}-1\right ) y = 0 \]

[_Bessel]

1.936

7965

\[ {}4 x^{2} y^{\prime \prime }+4 x y^{\prime }+\left (4 x^{2}-25\right ) y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

3.077

7966

\[ {}16 x^{2} y^{\prime \prime }+16 x y^{\prime }+\left (16 x^{2}-1\right ) y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

2.006

7967

\[ {}x y^{\prime \prime }+y^{\prime }+x y = 0 \]

[_Lienard]

0.859

7968

\[ {}y^{\prime }+x y^{\prime \prime }+\left (x -\frac {4}{x}\right ) y = 0 \]

[_Bessel]

1.019

7969

\[ {}x^{2} y^{\prime \prime }+x y^{\prime }+\left (9 x^{2}-4\right ) y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

2.128

7970

\[ {}x^{2} y^{\prime \prime }+x y^{\prime }+\left (36 x^{2}-\frac {1}{4}\right ) y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

3.807

7971

\[ {}x^{2} y^{\prime \prime }+x y^{\prime }+\left (25 x^{2}-\frac {4}{9}\right ) y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

2.001

7972

\[ {}x^{2} y^{\prime \prime }+x y^{\prime }+\left (2 x^{2}-64\right ) y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

3.970

7973

\[ {}x y^{\prime \prime }+2 y^{\prime }+4 y = 0 \]

[[_Emden, _Fowler]]

0.862

7974

\[ {}x y^{\prime \prime }+3 y^{\prime }+x y = 0 \]

[_Lienard]

0.877

7975

\[ {}x y^{\prime \prime }-y^{\prime }+x y = 0 \]

[_Lienard]

0.860

7976

\[ {}x y^{\prime \prime }-5 y^{\prime }+x y = 0 \]

[_Lienard]

0.969

7977

\[ {}x^{2} y^{\prime \prime }+\left (x^{2}-2\right ) y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

1.697

7978

\[ {}4 x^{2} y^{\prime \prime }+\left (16 x^{2}+1\right ) y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

0.895

7979

\[ {}x y^{\prime \prime }+3 y^{\prime }+x^{3} y = 0 \]

[[_Emden, _Fowler]]

1.730

7980

\[ {}9 x^{2} y^{\prime \prime }+9 x y^{\prime }+\left (x^{6}-36\right ) y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

2.106

7981

\[ {}y^{\prime \prime }-x^{2} y = 0 \]

[[_Emden, _Fowler]]

0.925

7982

\[ {}x y^{\prime \prime }+y^{\prime }-7 x^{3} y = 0 \]

[[_Emden, _Fowler]]

1.089

7983

\[ {}y^{\prime \prime }+y = 0 \]

[[_2nd_order, _missing_x]]

1.839

7984

\[ {}x^{2} y^{\prime \prime }+4 x y^{\prime }+\left (x^{2}+2\right ) y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

2.849

7985

\[ {}16 x^{2} y^{\prime \prime }+32 x y^{\prime }+\left (x^{4}-12\right ) y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

2.802

7986

\[ {}4 x^{2} y^{\prime \prime }-4 x y^{\prime }+\left (16 x^{2}+3\right ) y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

4.149

7987

\[ {}2 x y^{\prime \prime }+y^{\prime }+y = 0 \]

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

1.058

7988

\[ {}y^{\prime \prime }-x y^{\prime }-y = 0 \]

[[_2nd_order, _exact, _linear, _homogeneous]]

0.618

7989

\[ {}\left (x -1\right ) y^{\prime \prime }+3 y = 0 \]

[[_Emden, _Fowler]]

0.684

7990

\[ {}y^{\prime \prime }-x^{2} y^{\prime }+x y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

0.567

7991

\[ {}x y^{\prime \prime }-\left (x +2\right ) y^{\prime }+2 y = 0 \]

[_Laguerre]

1.020

7992

\[ {}\cos \left (x \right ) y^{\prime \prime }+y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

1.158

7993

\[ {}y^{\prime \prime }+x y^{\prime }+2 y = 0 \]
i.c.

[[_2nd_order, _with_linear_symmetries]]

0.606

7994

\[ {}\left (x +2\right ) y^{\prime \prime }+3 y = 0 \]
i.c.

[[_Emden, _Fowler]]

0.663

7995

\[ {}\left (1-2 \sin \left (x \right )\right ) y^{\prime \prime }+x y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

4.057

7996

\[ {}y^{\prime \prime }+x y^{\prime }+y = 0 \]
i.c.

[[_2nd_order, _exact, _linear, _homogeneous]]

0.671

7997

\[ {}x y^{\prime \prime }+\left (1-\cos \left (x \right )\right ) y^{\prime }+x^{2} y = 0 \]

[[_Emden, _Fowler]]

2.890

7998

\[ {}\left ({\mathrm e}^{x}-1-x \right ) y^{\prime \prime }+x y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

1.889

7999

\[ {}y^{\prime \prime }+x^{2} y^{\prime }+2 x y = 10 x^{3}-2 x +5 \]

[[_2nd_order, _exact, _linear, _nonhomogeneous]]

0.691

8000

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

[_quadrature]

0.293