2.2.70 Problems 6901 to 7000

Table 2.141: Main lookup table. Sorted sequentially by problem number.

#

ODE

CAS classification

Solved?

time (sec)

6901

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

[_linear]

1.595

6902

\[ {}x^{2} y^{\prime }+x y = 10 \sin \left (x \right ) \]

[_linear]

1.529

6903

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

[_linear]

1.055

6904

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

[_separable]

2.223

6905

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

[_separable]

3.392

6906

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

[_quadrature]

1.397

6907

\[ {}5 y^{\prime } = 2 y \]

[_quadrature]

1.401

6908

\[ {}y^{\prime \prime }-5 y^{\prime }+6 y = 0 \]

[[_2nd_order, _missing_x]]

1.096

6909

\[ {}2 y^{\prime \prime }+7 y^{\prime }-4 y = 0 \]

[[_2nd_order, _missing_x]]

1.128

6910

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

[[_2nd_order, _missing_y]]

0.906

6911

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

[[_Emden, _Fowler]]

0.772

6912

\[ {}x^{2} y^{\prime \prime }-7 y^{\prime } x +15 y = 0 \]

[[_Emden, _Fowler]]

1.143

6913

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

[[_3rd_order, _missing_y]]

0.205

6914

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

[_separable]

2.209

6915

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

[_quadrature]

1.688

6916

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

[_quadrature]

1.261

6917

\[ {}y^{\prime \prime }+4 y^{\prime }+6 y = 10 \]

[[_2nd_order, _missing_x]]

6.608

6918

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

[_quadrature]

0.578

6919

\[ {}{y^{\prime }}^{2} = 9-y^{2} \]

[_quadrature]

0.590

6920

\[ {}y y^{\prime }+\sqrt {16-y^{2}} = 0 \]

[_quadrature]

6.524

6921

\[ {}{y^{\prime }}^{2}-2 y^{\prime }+4 y = 4 x -1 \]

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

0.414

6922

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

system_of_ODEs

0.418

6923

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

system_of_ODEs

0.053

6924

\[ {}y^{\prime } = \sqrt {1-y^{2}} \]

[_quadrature]

39.312

6925

\[ {}y^{\prime \prime }+2 y^{\prime }+4 y = 5 \sin \left (t \right ) \]

[[_2nd_order, _linear, _nonhomogeneous]]

73.803

6926

\[ {}y^{\prime } = f \left (x \right ) \]

[_quadrature]

0.444

6927

\[ {}y^{\prime \prime } = f \left (x \right ) \]

[[_2nd_order, _quadrature]]

0.646

6928

\[ {}x {y^{\prime }}^{2}-4 y^{\prime }-12 x^{3} = 0 \]

[_quadrature]

0.275

6929

\[ {}y^{\prime } = 5-y \]

[_quadrature]

1.180

6930

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

[_quadrature]

1.242

6931

\[ {}y^{\prime \prime \prime \prime }-20 y^{\prime \prime \prime }+158 y^{\prime \prime }-580 y^{\prime }+841 y = 0 \]

[[_high_order, _missing_x]]

0.098

6932

\[ {}x^{3} y^{\prime \prime \prime }+2 x^{2} y^{\prime \prime }+20 y^{\prime } x -78 y = 0 \]

[[_3rd_order, _with_linear_symmetries]]

0.135

6933

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

[_quadrature]

2.417

6934

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

[_quadrature]

2.395

6935

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

[_separable]

2.414

6936

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

[_separable]

2.432

6937

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

[_separable]

2.530

6938

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

[_separable]

2.439

6939

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

[[_2nd_order, _missing_x]]

3.209

6940

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

[[_2nd_order, _missing_x]]

2.897

6941

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

[[_2nd_order, _missing_x]]

2.372

6942

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

[[_2nd_order, _missing_x]]

3.347

6943

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

[[_2nd_order, _missing_x]]

2.851

6944

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

[[_2nd_order, _missing_x]]

2.865

6945

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

[[_2nd_order, _missing_x]]

2.835

6946

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

[[_2nd_order, _missing_x]]

1.973

6947

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

[_quadrature]

1.654

6948

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

[_separable]

2.750

6949

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

[_quadrature]

1.505

6950

\[ {}y^{\prime } = \sqrt {x y} \]

[[_homogeneous, ‘class G‘]]

7.123

6951

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

[_separable]

1.647

6952

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

[[_linear, ‘class A‘]]

1.202

6953

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

[_separable]

1.319

6954

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

[_separable]

1.302

6955

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

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

5.402

6956

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

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

4.743

6957

\[ {}y^{\prime } = \sqrt {y^{2}-9} \]
i.c.

[_quadrature]

7.032

6958

\[ {}y^{\prime } = \sqrt {y^{2}-9} \]
i.c.

[_quadrature]

3.071

6959

\[ {}y^{\prime } = \sqrt {y^{2}-9} \]
i.c.

[_quadrature]

3.084

6960

\[ {}y^{\prime } = \sqrt {y^{2}-9} \]
i.c.

[_quadrature]

5.366

6961

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

[_separable]

1.283

6962

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

[_quadrature]

1.467

6963

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

[_quadrature]

1.525

6964

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

[_quadrature]

1.530

6965

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

[_quadrature]

1.493

6966

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

[_quadrature]

1.507

6967

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

[_quadrature]

1.561

6968

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

[_separable]

5.050

6969

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

[_separable]

4.815

6970

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

[_separable]

4.911

6971

\[ {}y^{\prime \prime }+4 y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

2.122

6972

\[ {}y^{\prime \prime }+4 y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

1.826

6973

\[ {}y^{\prime \prime }+4 y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

1.918

6974

\[ {}y^{\prime \prime }+4 y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

2.875

6975

\[ {}y^{\prime \prime }+4 y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

2.322

6976

\[ {}y^{\prime \prime }+4 y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

1.995

6977

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

[[_linear, ‘class A‘]]

1.562

6978

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

[[_Riccati, _special]]

1.438

6979

\[ {}2 y^{\prime \prime }-3 y^{2} = 0 \]
i.c.

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

1.798

6980

\[ {}y^{\prime }+2 y = 3 x -6 \]

[[_linear, ‘class A‘]]

1.254

6981

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

[_separable]

5.447

6982

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

[_quadrature]

0.752

6983

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

[_quadrature]

0.800

6984

\[ {}y^{\prime } = 2 y-4 \]

[_quadrature]

1.210

6985

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

[_separable]

1.654

6986

\[ {}y^{\prime \prime }+9 y = 18 \]

[[_2nd_order, _missing_x]]

2.759

6987

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

[[_2nd_order, _missing_y]]

0.973

6988

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

[[_2nd_order, _missing_x]]

1.784

6989

\[ {}y^{\prime } = y \left (y-3\right ) \]

[_quadrature]

1.813

6990

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

[_separable]

2.264

6991

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

[_separable]

4.163

6992

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

[_linear]

1.599

6993

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

[[_Riccati, _special]]

1.444

6994

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

[_quadrature]

0.828

6995

\[ {}y^{\prime } = 6 \sqrt {y}+5 x^{3} \]
i.c.

[_Chini]

1.227

6996

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

[[_2nd_order, _linear, _nonhomogeneous]]

3.884

6997

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

[[_2nd_order, _linear, _nonhomogeneous]]

2.993

6998

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

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

1.292

6999

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

[[_2nd_order, _linear, _nonhomogeneous]]

5.853

7000

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

[_linear]

1.937