2.16.71 Problems 7001 to 7100

Table 2.158: Main lookup table. Sorted sequentially by problem number.

#

ODE

Program classification

CAS classification

Solved?

Verified?

time (sec)

7001

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

second order series method. Regular singular point. Repeated root

[[_2nd_order, _with_linear_symmetries]]

1.595

7002

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

second order series method. Regular singular point. Difference not integer

[[_2nd_order, _with_linear_symmetries]]

2.388

7003

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

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

[[_2nd_order, _exact, _linear, _homogeneous]]

2.366

7004

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

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

[_Laguerre]

2.484

7005

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

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

[[_2nd_order, _with_linear_symmetries]]

1.95

7006

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

second order series method. Regular singular point. Difference not integer

[[_2nd_order, _with_linear_symmetries]]

2.242

7007

\[ {}x^{2} \left (x^{2}+1\right ) y^{\prime \prime }+2 x \left (x^{2}+3\right ) y^{\prime }+6 y = 0 \]

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

[[_2nd_order, _with_linear_symmetries]]

1.961

7008

\[ {}\left (-x^{2}+1\right ) y^{\prime \prime }-10 x y^{\prime }-18 y = 0 \]

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

[_Gegenbauer]

1.44

7009

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

second order series method. Regular singular point. Difference not integer

[[_2nd_order, _with_linear_symmetries]]

2.214

7010

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

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

[_erf]

0.324

7011

\[ {}x \left (-x^{2}+1\right ) y^{\prime \prime }-\left (x^{2}+7\right ) y^{\prime }+4 x y = 0 \]

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

[[_2nd_order, _exact, _linear, _homogeneous]]

2.112

7012

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

second order series method. Regular singular point. Difference not integer

[[_2nd_order, _with_linear_symmetries]]

2.223

7013

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

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

[[_2nd_order, _with_linear_symmetries]]

2.056

7014

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

second order series method. Regular singular point. Repeated root

[[_2nd_order, _with_linear_symmetries]]

1.429

7015

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

second order series method. Regular singular point. Difference not integer

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

1.924

7016

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

second order series method. Regular singular point. Repeated root

[[_2nd_order, _with_linear_symmetries]]

1.306

7017

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

second order series method. Regular singular point. Repeated root

[[_2nd_order, _with_linear_symmetries]]

1.582

7018

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

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

[[_2nd_order, _exact, _linear, _homogeneous]]

0.628

7019

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

second order series method. Regular singular point. Difference not integer

[[_2nd_order, _with_linear_symmetries]]

2.402

7020

\[ {}4 x^{2} y^{\prime \prime }+3 x^{2} y^{\prime }+\left (1+3 x \right ) y = 0 \]

second order series method. Regular singular point. Repeated root

[[_2nd_order, _with_linear_symmetries]]

2.023

7021

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

second order series method. Regular singular point. Repeated root

[[_2nd_order, _with_linear_symmetries]]

1.531

7022

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

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

[[_2nd_order, _with_linear_symmetries]]

2.02

7023

\[ {}x \left (-x^{2}+1\right ) y^{\prime \prime }+5 \left (-x^{2}+1\right ) y^{\prime }-4 x y = 0 \]

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

[[_2nd_order, _exact, _linear, _homogeneous]]

1.937

7024

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

second order series method. Regular singular point. Repeated root

[[_2nd_order, _exact, _linear, _homogeneous]]

1.567

7025

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

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

[[_Bessel, _modified]]

2.235

7026

\[ {}x \left (1-2 x \right ) y^{\prime \prime }-2 \left (2+x \right ) y^{\prime }+18 y = 0 \]

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

[[_2nd_order, _with_linear_symmetries]]

2.143

7027

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

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

[[_2nd_order, _exact, _linear, _homogeneous]]

1.898

7028

\[ {}x^{2} y^{\prime \prime }-3 x y^{\prime }+4 y \left (1+x \right ) = 0 \]

second order series method. Regular singular point. Repeated root

[[_2nd_order, _with_linear_symmetries]]

1.473

7029

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

exact, linear, separable, homogeneousTypeD2, first_order_ode_lie_symmetry_lookup

[_separable]

1.048

7030

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

i.c.

exact, riccati, separable, first_order_ode_lie_symmetry_lookup

[_separable]

1.919

7031

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

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[_linear]

0.654

7032

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

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[_linear]

0.777

7033

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

i.c.

exact, differentialType, homogeneousTypeD2, first_order_ode_lie_symmetry_calculated

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

3.537

7034

\[ {}y^{\prime }+\frac {2 y}{x} = 6 x^{4} y^{2} \]

riccati, bernoulli, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

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

1.166

7035

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

exact

[_exact]

0.425

7036

\[ {}x y-1+x^{2} y^{\prime } = 0 \]

exact

[_linear]

0.302

7037

\[ {}y^{\prime \prime }-y^{\prime }-2 y = 5 \,{\mathrm e}^{2 x} \]

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _with_linear_symmetries]]

0.607

7038

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

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _linear, _nonhomogeneous]]

0.9

7039

\[ {}y^{\prime \prime }-4 y^{\prime }+3 y = 9 x^{2}+4 \]

i.c.

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _with_linear_symmetries]]

0.808

7040

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

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _linear, _nonhomogeneous]]

0.883

7041

\[ {}\left [\begin {array}{c} x^{\prime }=-2 x+3 y \\ y^{\prime }=-2 x+5 y \end {array}\right ] \]

i.c.

system of linear ODEs

system of linear ODEs

0.421

7042

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

i.c.

system of linear ODEs

system of linear ODEs

0.427

7043

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

system of linear ODEs

system of linear ODEs

0.872

7044

\[ {}\left [\begin {array}{c} x^{\prime }=6 x-7 y+10 \\ y^{\prime }=x-2 y-2 \,{\mathrm e}^{t} \end {array}\right ] \]

system of linear ODEs

system of linear ODEs

1.278

7045

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

exact, separable, first_order_ode_lie_symmetry_lookup

[_separable]

2.487

7046

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

exact, separable, first_order_ode_lie_symmetry_lookup

[_separable]

0.819

7047

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

exact, separable, first_order_ode_lie_symmetry_lookup

[_separable]

2.619

7048

\[ {}y^{\prime } = \left (5+\frac {\sec \left (x \right )}{x}\right ) \left (\sin \left (y\right )+y\right ) \]

exact, separable, first_order_ode_lie_symmetry_lookup

[_separable]

11.605

7049

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

quadrature

[_quadrature]

0.175

7050

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

quadrature

[_quadrature]

0.108

7051

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

quadrature

[_quadrature]

0.092

7052

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

quadrature

[_quadrature]

0.103

7053

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

quadrature

[_quadrature]

0.072

7054

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

quadrature

[_quadrature]

0.217

7055

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

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[_linear]

4.544

7056

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

i.c.

exact, linear, separable, homogeneousTypeD2, first_order_ode_lie_symmetry_lookup

[_separable]

1.167

7057

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

exact, linear, separable, homogeneousTypeD2, first_order_ode_lie_symmetry_lookup

[_separable]

0.577

7058

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

exact, separable, first_order_ode_lie_symmetry_lookup

[_separable]

1.029

7059

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

quadrature

[_quadrature]

0.096

7060

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

exactWithIntegrationFactor, first_order_ode_lie_symmetry_calculated

[[_homogeneous, ‘class G‘], _rational, [_Abel, ‘2nd type‘, ‘class B‘]]

2.513

7061

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

clairaut

[[_1st_order, _with_linear_symmetries], _Clairaut]

0.258

7062

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

i.c.

quadrature

[_quadrature]

48.819

7063

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

unknown

[‘y=_G(x,y’)‘]

N/A

0.629

7064

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

bernoulli, first_order_ode_lie_symmetry_lookup

[_Bernoulli]

1.113

7065

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

first_order_ode_lie_symmetry_calculated

[[_1st_order, _with_linear_symmetries], _Chini]

3.674

7066

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

exactByInspection, homogeneousTypeD2, first_order_ode_lie_symmetry_calculated

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

1.532

7067

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

separable

[_separable]

2.337

7068

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

quadrature

[_quadrature]

0.107

7069

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

quadrature

[_quadrature]

0.069

7070

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

quadrature

[_quadrature]

0.071

7071

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

quadrature

[_quadrature]

0.069

7072

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

quadrature

[_quadrature]

0.068

7073

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

dAlembert

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

0.378

7074

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

riccati, homogeneousTypeD2, first_order_ode_lie_symmetry_calculated

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

2.058

7075

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

homogeneousTypeMapleC, first_order_ode_lie_symmetry_calculated

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

2.444

7076

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

i.c.

quadrature

[_quadrature]

0.278

7077

\[ {}p^{\prime } = a p-b p^{2} \]

i.c.

quadrature

[_quadrature]

1.123

7078

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

exact, bernoulli, first_order_ode_lie_symmetry_lookup

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

0.987

7079

\[ {}x f^{\prime }-f = \frac {{f^{\prime }}^{2} \left (1-{f^{\prime }}^{\lambda }\right )^{2}}{\lambda ^{2}} \]

clairaut

[_Clairaut]

41.631

7080

\[ {}x y^{\prime }-2 y+b y^{2} = c \,x^{4} \]

riccati

[_rational, _Riccati]

1.987

7081

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

riccati

[_rational, _Riccati]

22.616

7082

\[ {}u^{\prime }+u^{2} = \frac {1}{x^{\frac {4}{5}}} \]

riccati

[_rational, _Riccati]

0.265

7083

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

homogeneousTypeD2, first_order_ode_lie_symmetry_calculated

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

3.423

7084

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

kovacic, second_order_linear_constant_coeff, linear_second_order_ode_solved_by_an_integrating_factor

[[_2nd_order, _missing_x]]

0.323

7085

\[ {}5 y^{\prime \prime }+2 y^{\prime }+4 y = 0 \]

i.c.

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _missing_x]]

1.092

7086

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

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _missing_x]]

0.799

7087

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

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _linear, _nonhomogeneous]]

1.089

7088

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

dAlembert, first_order_nonlinear_p_but_separable

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

0.881

7089

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

dAlembert

[_dAlembert]

152.454

7090

\[ {}f^{\prime } = \frac {1}{f} \]

quadrature

[_quadrature]

0.257

7091

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

kovacic, exact linear second order ode, second_order_integrable_as_is, second_order_ode_missing_y, second_order_ode_non_constant_coeff_transformation_on_B

[[_2nd_order, _missing_y]]

2.355

7092

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

i.c.

kovacic, exact linear second order ode, second_order_integrable_as_is, second_order_ode_missing_y

[[_2nd_order, _missing_y]]

2.044

7093

\[ {}t^{2} y^{\prime \prime }-3 t y^{\prime }+5 y = 0 \]

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

[[_Emden, _Fowler]]

2.004

7094

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

kovacic, exact linear second order ode, second_order_integrable_as_is, second_order_ode_missing_y, second_order_ode_non_constant_coeff_transformation_on_B

[[_2nd_order, _missing_y]]

0.972

7095

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

kovacic, second_order_ode_missing_y, second_order_ode_non_constant_coeff_transformation_on_B

[[_2nd_order, _missing_y]]

0.863

7096

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

unknown

[[_2nd_order, _with_linear_symmetries]]

N/A

2.566

7097

\[ {}t y^{\prime \prime }-y^{\prime }+4 t^{3} y = 0 \]

kovacic, second_order_bessel_ode, second_order_change_of_variable_on_x_method_1, second_order_change_of_variable_on_x_method_2

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

1.806

7098

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

kovacic, exact linear second order ode, second_order_integrable_as_is, second_order_ode_missing_y, second_order_ode_quadrature, second_order_linear_constant_coeff, second_order_ode_can_be_made_integrable

[[_2nd_order, _quadrature]]

0.726

7099

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

kovacic, exact linear second order ode, second_order_integrable_as_is, second_order_ode_missing_y, second_order_ode_quadrature, second_order_linear_constant_coeff, second_order_ode_can_be_made_integrable

[[_2nd_order, _quadrature]]

1.167

7100

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

kovacic, exact linear second order ode, second_order_integrable_as_is, second_order_ode_missing_y, second_order_ode_quadrature, second_order_linear_constant_coeff

[[_2nd_order, _quadrature]]

1.664