2.16.50 Problems 4901 to 5000

Table 2.116: Main lookup table. Sorted sequentially by problem number.

#

ODE

Program classification

CAS classification

Solved?

Verified?

time (sec)

4901

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

kovacic, second_order_linear_constant_coeff, second_order_ode_can_be_made_integrable

[[_2nd_order, _missing_x]]

0.48

4902

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

second order series method. Ordinary point, second order series method. Taylor series method

[[_2nd_order, _missing_x]]

0.475

4903

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

kovacic, second_order_linear_constant_coeff, linear_second_order_ode_solved_by_an_integrating_factor

[[_2nd_order, _missing_x]]

0.25

4904

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

second order series method. Regular singular point. Difference is integer

[[_Emden, _Fowler]]

0.815

4905

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

kovacic, second_order_euler_ode, second_order_change_of_variable_on_x_method_1, second_order_change_of_variable_on_x_method_2, second_order_change_of_variable_on_y_method_2, second_order_ode_non_constant_coeff_transformation_on_B

[[_Emden, _Fowler]]

1.131

4906

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

second order series method. Regular singular point. Difference is integer

[[_2nd_order, _with_linear_symmetries]]

1.043

4907

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

kovacic, second_order_change_of_variable_on_y_method_2, second_order_ode_non_constant_coeff_transformation_on_B

[[_2nd_order, _with_linear_symmetries]]

1.088

4908

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

second order series method. Ordinary point, second order series method. Taylor series method

[[_2nd_order, _with_linear_symmetries]]

0.326

4909

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

kovacic, second_order_change_of_variable_on_y_method_2, second_order_ode_non_constant_coeff_transformation_on_B

[[_2nd_order, _with_linear_symmetries]]

0.998

4910

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

second order series method. Ordinary point, second order series method. Taylor series method

[[_2nd_order, _with_linear_symmetries]]

0.569

4911

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

kovacic, second_order_change_of_variable_on_y_method_1, linear_second_order_ode_solved_by_an_integrating_factor

[[_2nd_order, _with_linear_symmetries]]

0.391

4912

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

first_order_ode_lie_symmetry_calculated

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

0.845

4913

\[ {}y^{\prime } = 4 y^{2}-3 y+1 \]

quadrature

[_quadrature]

0.418

4914

\[ {}s^{\prime } = t \ln \left (s^{2 t}\right )+8 t^{2} \]

unknown

[‘y=_G(x,y’)‘]

N/A

0.575

4915

\[ {}y^{\prime } = \frac {y \,{\mathrm e}^{x +y}}{x^{2}+2} \]

exact, separable, first_order_ode_lie_symmetry_lookup

[_separable]

0.726

4916

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

exact, separable, first_order_ode_lie_symmetry_lookup

[_separable]

0.747

4917

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

unknown

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

N/A

0.42

4918

\[ {}x y^{\prime } = \frac {1}{y^{3}} \]

exact, separable, first_order_ode_lie_symmetry_lookup

[_separable]

0.439

4919

\[ {}x^{\prime } = 3 x t^{2} \]

exact, linear, separable, homogeneousTypeD2, first_order_ode_lie_symmetry_lookup

[_separable]

0.547

4920

\[ {}x^{\prime } = \frac {t \,{\mathrm e}^{-t -2 x}}{x} \]

exact, separable, first_order_ode_lie_symmetry_lookup

[_separable]

0.743

4921

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

exact, separable, first_order_ode_lie_symmetry_lookup

[_separable]

0.605

4922

\[ {}x v^{\prime } = \frac {1-4 v^{2}}{3 v} \]

exact, bernoulli, separable, first_order_ode_lie_symmetry_lookup

[_separable]

2.539

4923

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

exact, separable, first_order_ode_lie_symmetry_lookup

[_separable]

82.737

4924

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

exact, separable, first_order_ode_lie_symmetry_lookup

[_separable]

0.89

4925

\[ {}x^{\prime }-x^{3} = x \]

quadrature

[_quadrature]

0.964

4926

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

exact, bernoulli, separable, first_order_ode_lie_symmetry_lookup

[_separable]

1.51

4927

\[ {}\frac {y^{\prime }}{y}+y \,{\mathrm e}^{\cos \left (x \right )} \sin \left (x \right ) = 0 \]

exact, riccati, separable, first_order_ode_lie_symmetry_lookup

[_separable]

0.726

4928

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

i.c.

exact, riccati, separable, first_order_ode_lie_symmetry_lookup

[_separable]

2.17

4929

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

i.c.

exact, linear, separable, first_order_ode_lie_symmetry_lookup

[_separable]

1.085

4930

\[ {}\frac {y^{\prime }}{2} = \sqrt {y+1}\, \cos \left (x \right ) \]

i.c.

exact, separable, first_order_ode_lie_symmetry_lookup

[_separable]

2.295

4931

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

i.c.

exact, separable, first_order_ode_lie_symmetry_lookup

[_separable]

10.971

4932

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

i.c.

exact, separable, first_order_ode_lie_symmetry_lookup

[_separable]

3.456

4933

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

i.c.

exact, separable, differentialType, first_order_ode_lie_symmetry_lookup

[_separable]

1.619

4934

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

i.c.

exact, separable, first_order_ode_lie_symmetry_lookup

[_separable]

1.257

4935

\[ {}y^{\prime } = 8 x^{3} {\mathrm e}^{-2 y} \]

i.c.

exact, separable, first order special form ID 1, first_order_ode_lie_symmetry_lookup

[_separable]

1.196

4936

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

i.c.

exact, linear, separable, first_order_ode_lie_symmetry_lookup

[_separable]

1.071

4937

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

i.c.

exact, separable, first_order_ode_lie_symmetry_lookup

[_separable]

2.5

4938

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

i.c.

quadrature

[_quadrature]

0.31

4939

\[ {}y^{\prime } = \frac {{\mathrm e}^{x^{2}}}{y^{2}} \]

i.c.

exact, separable, first_order_ode_lie_symmetry_lookup

[_separable]

2.085

4940

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

i.c.

exact, riccati, separable, first_order_ode_lie_symmetry_lookup

[_separable]

76.019

4941

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

i.c.

exact, linear, separable, homogeneousTypeD2, first_order_ode_lie_symmetry_lookup

[_separable]

1.283

4942

\[ {}y^{\prime } = y^{\frac {1}{3}} \]

quadrature

[_quadrature]

0.207

4943

\[ {}y^{\prime } = y^{\frac {1}{3}} \]

i.c.

quadrature

[_quadrature]

0.249

4944

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

exact, separable, first_order_ode_lie_symmetry_lookup

[_separable]

1.638

4945

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

exact, separable, first_order_ode_lie_symmetry_lookup

[_separable]

0.57

4946

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

i.c.

exact, separable, first_order_ode_lie_symmetry_lookup

[_separable]

1.247

4947

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

i.c.

exact, separable, first_order_ode_lie_symmetry_lookup

[_separable]

1.102

4948

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

i.c.

exact, separable, first_order_ode_lie_symmetry_lookup

[_separable]

1.092

4949

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

i.c.

quadrature

[_quadrature]

0.556

4950

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

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[_linear]

1.517

4951

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

unknown

[‘y=_G(x,y’)‘]

N/A

0.414

4952

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

exact, linear, separable, homogeneousTypeD2, first_order_ode_lie_symmetry_lookup

[_separable]

1.053

4953

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

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[_linear]

4.544

4954

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

unknown

[[_Abel, ‘2nd type‘, ‘class A‘]]

N/A

0.865

4955

\[ {}3 r = r^{\prime }-\theta ^{3} \]

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[[_linear, ‘class A‘]]

0.584

4956

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

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[[_linear, ‘class A‘]]

0.553

4957

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

linear, homogeneousTypeD2, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[_linear]

0.583

4958

\[ {}r^{\prime }+r \tan \left (\theta \right ) = \sec \left (\theta \right ) \]

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[_linear]

0.714

4959

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

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[_linear]

0.576

4960

\[ {}t +y+1-y^{\prime } = 0 \]

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[[_linear, ‘class A‘]]

0.528

4961

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

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[[_linear, ‘class A‘]]

0.579

4962

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

unknown

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

N/A

0.389

4963

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

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[_linear]

0.75

4964

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

exact, linear, separable, first_order_ode_lie_symmetry_lookup

[_separable]

0.967

4965

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

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[_linear]

2.342

4966

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

i.c.

linear, homogeneousTypeD2, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[_linear]

1.122

4967

\[ {}y^{\prime }+4 y-{\mathrm e}^{-x} = 0 \]

i.c.

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[[_linear, ‘class A‘]]

1.069

4968

\[ {}t^{2} x^{\prime }+3 x t = t^{4} \ln \left (t \right )+1 \]

i.c.

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[_linear]

1.249

4969

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

i.c.

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[_linear]

1.112

4970

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

i.c.

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[_linear]

2.098

4971

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

i.c.

exact, linear, first_order_ode_lie_symmetry_lookup

[_linear]

1.739

4972

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

i.c.

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[_linear]

19.125

4973

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

exactWithIntegrationFactor, first_order_ode_lie_symmetry_calculated

[[_1st_order, _with_exponential_symmetries]]

4.855

4974

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

bernoulli, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[_rational, _Bernoulli]

1.266

4975

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

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[_linear]

0.552

4976

\[ {}x^{\prime } = \alpha -\beta \cos \left (\frac {\pi t}{12}\right )-k x \]

i.c.

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[[_linear, ‘class A‘]]

1.755

4977

\[ {}u^{\prime } = \alpha \left (1-u\right )-\beta u \]

quadrature

[_quadrature]

0.375

4978

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

linear, homogeneousTypeD2, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[_linear]

1.118

4979

\[ {}x^{\frac {10}{3}}-2 y+x y^{\prime } = 0 \]

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[_linear]

0.59

4980

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

exact, separable, first_order_ode_lie_symmetry_lookup

[_separable]

1.96

4981

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

exact

[_exact]

0.312

4982

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

exact

[_separable]

0.279

4983

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

exact

[_exact, [_1st_order, ‘_with_symmetry_[F(x)*G(y),0]‘]]

0.283

4984

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

exact

[_exact]

0.399

4985

\[ {}\theta r^{\prime }+3 r-\theta -1 = 0 \]

exact

[_linear]

0.266

4986

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

exact

[_linear]

0.26

4987

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

exact

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

0.24

4988

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

exact

[_exact]

0.556

4989

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

exact

[_exact]

7.503

4990

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

exact

[_linear]

0.265

4991

\[ {}\frac {t y^{\prime }}{y}+1+\ln \left (y\right ) = 0 \]

exact

[_separable]

0.477

4992

\[ {}\cos \left (\theta \right ) r^{\prime }-r \sin \left (\theta \right )+{\mathrm e}^{\theta } = 0 \]

exact

[_linear]

0.293

4993

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

exact

[_exact]

0.319

4994

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

exact

[[_homogeneous, ‘class G‘], _rational]

0.204

4995

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

unknown

[‘y=_G(x,y’)‘]

N/A

57.155

4996

\[ {}y^{\prime } = \frac {{\mathrm e}^{x +y}}{y-1} \]

exact, separable, first_order_ode_lie_symmetry_lookup

[_separable]

1.007

4997

\[ {}y^{\prime }-4 y = 32 x^{2} \]

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[[_linear, ‘class A‘]]

0.918

4998

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

exact

[_exact, _rational]

1.542

4999

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

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[_linear]

0.97

5000

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

exact, separable, first_order_ode_lie_symmetry_lookup

[_separable]

1.431