2.20.58 AN INTRODUCTION TO ORDINARY DIFFERENTIAL EQUATIONS by JAMES C. ROBINSON. Cambridge University Press 2004

Column notations: A is ODE degree. B is Program Number of solutions generated. C is CAS Number of solutions generated.

Table 2.494: AN INTRODUCTION TO ORDINARY DIFFERENTIAL EQUATIONS by JAMES C. ROBINSON. Cambridge University Press 2004

#

ODE

A

B

C

Program classification

CAS classification

Solved?

Verified?

time (sec)

11967

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

1

1

1

quadrature

[_quadrature]

0.577

11968

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

1

1

1

quadrature

[_quadrature]

0.266

11969

\[ {}u^{\prime } = 4 \ln \left (t \right ) t \]

1

1

1

quadrature

[_quadrature]

0.192

11970

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

1

1

1

quadrature

[_quadrature]

0.252

11971

\[ {}T^{\prime } = {\mathrm e}^{-t} \sin \left (2 t \right ) \]

1

1

1

quadrature

[_quadrature]

0.674

11972

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

i.c.

1

1

1

quadrature

[_quadrature]

0.694

11973

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

i.c.

1

1

1

quadrature

[_quadrature]

0.395

11974

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

i.c.

1

1

1

quadrature

[_quadrature]

0.806

11975

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

i.c.

1

1

1

quadrature

[_quadrature]

0.411

11976

\[ {}x^{\prime } {\mathrm e}^{3 t}+3 x \,{\mathrm e}^{3 t} = {\mathrm e}^{-t} \]

i.c.

1

1

1

exact, linear, first_order_ode_lie_symmetry_lookup

[[_linear, ‘class A‘]]

1.396

11977

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

1

1

1

quadrature

[_quadrature]

0.435

11978

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

1

1

1

quadrature

[_quadrature]

1.095

11979

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

1

1

1

quadrature

[_quadrature]

1.213

11980

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

1

1

1

quadrature

[_quadrature]

2.863

11981

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

1

1

1

quadrature

[_quadrature]

1.005

11982

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

i.c.

1

1

1

exact, linear, separable, first_order_ode_lie_symmetry_lookup

[_separable]

1.519

11983

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

i.c.

1

1

1

exact, riccati, separable, first_order_ode_lie_symmetry_lookup

[_separable]

4.773

11984

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

1

1

1

exact, linear, separable, homogeneousTypeD2, first_order_ode_lie_symmetry_lookup

[_separable]

1.078

11985

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

1

1

1

quadrature

[_quadrature]

0.176

11986

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

1

1

1

exact, riccati, separable, first_order_ode_lie_symmetry_lookup

[_separable]

1.004

11987

\[ {}x^{\prime }+p x = q \]

1

1

1

quadrature

[_quadrature]

0.811

11988

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

1

1

1

exact, linear, separable, homogeneousTypeD2, first_order_ode_lie_symmetry_lookup

[_separable]

2.334

11989

\[ {}i^{\prime } = p \left (t \right ) i \]

1

1

1

exact, linear, separable, homogeneousTypeD2, first_order_ode_lie_symmetry_lookup

[_separable]

1.553

11990

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

1

1

1

quadrature

[_quadrature]

0.863

11991

\[ {}m v^{\prime } = -m g +k v^{2} \]

1

1

1

quadrature

[_quadrature]

0.623

11992

\[ {}x^{\prime } = k x-x^{2} \]

i.c.

1

1

1

quadrature

[_quadrature]

2.006

11993

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

i.c.

1

1

0

quadrature

[_quadrature]

3.913

11994

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

i.c.

1

0

0

exact, linear, differentialType, first_order_ode_lie_symmetry_lookup

[_linear]

N/A

1.396

11995

\[ {}x^{\prime }+x t = 4 t \]

i.c.

1

1

1

exact, linear, separable, first_order_ode_lie_symmetry_lookup

[_separable]

2.01

11996

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

1

1

1

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[_linear]

1.334

11997

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

i.c.

1

1

1

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[_linear]

1.697

11998

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

1

1

1

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[_linear]

1.259

11999

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

i.c.

1

1

1

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[_linear]

2.536

12000

\[ {}x^{\prime }+5 x = t \]

1

1

1

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[[_linear, ‘class A‘]]

0.875

12001

\[ {}x^{\prime }+\left (a +\frac {1}{t}\right ) x = b \]

i.c.

1

1

1

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[_linear]

1.571

12002

\[ {}T^{\prime } = -k \left (T-\mu -a \cos \left (\omega \left (t -\phi \right )\right )\right ) \]

1

1

1

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[[_linear, ‘class A‘]]

2.019

12003

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

1

1

2

exact

[_exact, [_1st_order, ‘_with_symmetry_[F(x),G(x)]‘], [_Abel, ‘2nd type‘, ‘class A‘]]

6.938

12004

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

1

1

1

exact, linear, first_order_ode_lie_symmetry_lookup

[_linear]

1.229

12005

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

1

1

1

exact

[_exact]

7.517

12006

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

1

1

1

exact

[_exact]

2.416

12007

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

1

1

1

exactWithIntegrationFactor

[[_1st_order, ‘_with_symmetry_[F(x),G(x)]‘]]

3.376

12008

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

1

1

2

exact, separable, first_order_ode_lie_symmetry_lookup

[_separable]

1.548

12009

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

1

1

1

exact, separable, first_order_ode_lie_symmetry_lookup

[_separable]

3.09

12010

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

1

1

1

riccati, homogeneousTypeD2, first_order_ode_lie_symmetry_calculated

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

1.543

12011

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

1

1

1

first_order_ode_lie_symmetry_calculated

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

2.396

12012

\[ {}x^{\prime } = k x-x^{2} \]

1

1

1

quadrature

[_quadrature]

0.488

12013

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

i.c.

1

1

1

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _missing_x]]

0.578

12014

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

i.c.

1

1

1

kovacic, second_order_linear_constant_coeff, linear_second_order_ode_solved_by_an_integrating_factor

[[_2nd_order, _missing_x]]

0.742

12015

\[ {}z^{\prime \prime }-4 z^{\prime }+13 z = 0 \]

i.c.

1

1

1

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _missing_x]]

1.068

12016

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

i.c.

1

1

1

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _missing_x]]

0.57

12017

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

i.c.

1

1

1

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

[[_2nd_order, _missing_x]]

1.386

12018

\[ {}\theta ^{\prime \prime }+4 \theta = 0 \]

i.c.

1

1

1

kovacic, second_order_linear_constant_coeff, second_order_ode_can_be_made_integrable

[[_2nd_order, _missing_x]]

5.032

12019

\[ {}y^{\prime \prime }+2 y^{\prime }+10 y = 0 \]

i.c.

1

1

1

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _missing_x]]

0.778

12020

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

i.c.

1

1

1

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _missing_x]]

0.598

12021

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

i.c.

1

1

1

kovacic, second_order_linear_constant_coeff, linear_second_order_ode_solved_by_an_integrating_factor

[[_2nd_order, _missing_x]]

0.698

12022

\[ {}x^{\prime \prime }+6 x^{\prime }+10 x = 0 \]

i.c.

1

1

1

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _missing_x]]

0.837

12023

\[ {}4 x^{\prime \prime }-20 x^{\prime }+21 x = 0 \]

i.c.

1

1

1

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _missing_x]]

0.589

12024

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

i.c.

1

1

1

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _missing_x]]

0.562

12025

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

i.c.

1

1

1

kovacic, second_order_linear_constant_coeff, second_order_ode_can_be_made_integrable

[[_2nd_order, _missing_x]]

5.638

12026

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

i.c.

1

1

1

kovacic, second_order_linear_constant_coeff, linear_second_order_ode_solved_by_an_integrating_factor

[[_2nd_order, _missing_x]]

0.724

12027

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

i.c.

1

1

1

kovacic, second_order_linear_constant_coeff, second_order_ode_can_be_made_integrable

[[_2nd_order, _missing_x]]

6.769

12028

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

1

1

1

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _with_linear_symmetries]]

0.501

12029

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

1

1

1

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

[[_2nd_order, _missing_y]]

2.224

12030

\[ {}x^{\prime \prime }+x^{\prime }-2 x = 3 \,{\mathrm e}^{-t} \]

1

1

1

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _with_linear_symmetries]]

0.519

12031

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

1

1

1

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _with_linear_symmetries]]

0.541

12032

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

1

1

1

kovacic, second_order_linear_constant_coeff, linear_second_order_ode_solved_by_an_integrating_factor

[[_2nd_order, _with_linear_symmetries]]

0.589

12033

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

1

1

1

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _linear, _nonhomogeneous]]

0.94

12034

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

1

1

1

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _linear, _nonhomogeneous]]

1.889

12035

\[ {}x^{\prime \prime }+2 x^{\prime }+10 x = {\mathrm e}^{-t} \]

1

1

1

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _with_linear_symmetries]]

0.69

12036

\[ {}x^{\prime \prime }+2 x^{\prime }+10 x = {\mathrm e}^{-t} \cos \left (3 t \right ) \]

1

1

1

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _linear, _nonhomogeneous]]

0.966

12037

\[ {}x^{\prime \prime }+6 x^{\prime }+10 x = {\mathrm e}^{-2 t} \cos \left (t \right ) \]

1

1

1

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _linear, _nonhomogeneous]]

0.858

12038

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

1

1

1

kovacic, second_order_linear_constant_coeff, linear_second_order_ode_solved_by_an_integrating_factor

[[_2nd_order, _with_linear_symmetries]]

0.577

12039

\[ {}x^{\prime \prime }+x^{\prime }-2 x = 12 \,{\mathrm e}^{-t}-6 \,{\mathrm e}^{t} \]

1

1

1

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _linear, _nonhomogeneous]]

0.707

12040

\[ {}x^{\prime \prime }+4 x = 289 t \,{\mathrm e}^{t} \sin \left (2 t \right ) \]

1

1

1

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _linear, _nonhomogeneous]]

1.481

12041

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

i.c.

1

1

1

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _linear, _nonhomogeneous]]

1.436

12042

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

i.c.

1

1

1

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _linear, _nonhomogeneous]]

2.47

12043

\[ {}x^{\prime \prime \prime }-6 x^{\prime \prime }+11 x^{\prime }-6 x = {\mathrm e}^{-t} \]

1

1

1

higher_order_linear_constant_coefficients_ODE

[[_3rd_order, _with_linear_symmetries]]

0.739

12044

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

1

1

1

higher_order_linear_constant_coefficients_ODE

[[_3rd_order, _linear, _nonhomogeneous]]

1.664

12045

\[ {}x^{\prime \prime \prime \prime }-4 x^{\prime \prime \prime }+8 x^{\prime \prime }-8 x^{\prime }+4 x = \sin \left (t \right ) \]

1

1

1

higher_order_linear_constant_coefficients_ODE

[[_high_order, _linear, _nonhomogeneous]]

0.33

12046

\[ {}x^{\prime \prime \prime \prime }-5 x^{\prime \prime }+4 x = {\mathrm e}^{t} \]

1

1

1

higher_order_linear_constant_coefficients_ODE

[[_high_order, _with_linear_symmetries]]

0.944

12047

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

1

1

1

reduction_of_order

[[_2nd_order, _with_linear_symmetries]]

0.594

12048

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

1

1

1

reduction_of_order

[[_2nd_order, _with_linear_symmetries]]

0.615

12049

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

1

1

1

reduction_of_order

[[_2nd_order, _with_linear_symmetries]]

5.856

12050

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

1

1

1

reduction_of_order

[[_2nd_order, _with_linear_symmetries]]

0.912

12051

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

1

1

1

reduction_of_order

[_Hermite]

0.515

12052

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

1

1

1

reduction_of_order

[[_2nd_order, _with_linear_symmetries]]

1.687

12053

\[ {}y^{\prime \prime }-y^{\prime }-6 y = {\mathrm e}^{x} \]

1

1

1

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _with_linear_symmetries]]

0.483

12054

\[ {}x^{\prime \prime }-x = \frac {1}{t} \]

1

1

1

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _linear, _nonhomogeneous]]

0.52

12055

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

1

1

1

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _linear, _nonhomogeneous]]

1.353

12056

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

1

1

1

kovacic, second_order_euler_ode, exact linear second order ode, second_order_integrable_as_is

[[_2nd_order, _exact, _linear, _nonhomogeneous]]

2.075

12057

\[ {}x^{\prime \prime }-4 x^{\prime } = \tan \left (t \right ) \]

1

1

1

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

[[_2nd_order, _missing_y]]

12.559

12058

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

1

1

1

reduction_of_order

[[_2nd_order, _linear, _nonhomogeneous]]

4.349

12059

\[ {}x^{2} y^{\prime \prime }-4 x y^{\prime }+6 y = 0 \]

i.c.

1

1

1

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_1, second_order_change_of_variable_on_y_method_2, linear_second_order_ode_solved_by_an_integrating_factor

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

3.365

12060

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

i.c.

1

1

1

kovacic, second_order_euler_ode

[[_Emden, _Fowler]]

0.976

12061

\[ {}t^{2} x^{\prime \prime }-5 t x^{\prime }+10 x = 0 \]

i.c.

1

1

1

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]]

4.056

12062

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

i.c.

1

1

1

kovacic, second_order_euler_ode, exact linear second order ode, second_order_integrable_as_is, 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

[[_2nd_order, _exact, _linear, _homogeneous]]

4.306

12063

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

i.c.

1

1

1

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]]

26.208

12064

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

i.c.

1

1

1

kovacic, second_order_euler_ode, exact linear second order ode, second_order_integrable_as_is, second_order_change_of_variable_on_x_method_2, second_order_change_of_variable_on_y_method_2

[[_2nd_order, _exact, _linear, _homogeneous]]

3.656

12065

\[ {}4 t^{2} x^{\prime \prime }+8 t x^{\prime }+5 x = 0 \]

i.c.

1

1

1

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]]

3.39

12066

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

i.c.

1

1

1

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]]

3.652

12067

\[ {}3 x^{2} z^{\prime \prime }+5 x z^{\prime }-z = 0 \]

i.c.

1

1

1

kovacic, second_order_euler_ode, exact linear second order ode, second_order_integrable_as_is, second_order_change_of_variable_on_x_method_2, second_order_change_of_variable_on_y_method_2

[[_2nd_order, _exact, _linear, _homogeneous]]

4.325

12068

\[ {}t^{2} x^{\prime \prime }+3 t x^{\prime }+13 x = 0 \]

i.c.

1

1

1

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]]

6.086

12069

\[ {}a y^{\prime \prime }+\left (-a +b \right ) y^{\prime }+c y = 0 \]

1

1

1

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _missing_x]]

0.644

12070

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

1

2

1

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

[_Gegenbauer]

1.398

12071

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

1

2

1

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

[_Hermite]

0.776

12072

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

1

2

1

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

[[_Emden, _Fowler]]

0.93

12073

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

1

1

1

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

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

1.358

12074

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

1

2

1

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

[[_2nd_order, _with_linear_symmetries]]

1.044

12075

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

1

2

1

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

[[_2nd_order, _with_linear_symmetries]]

1.38

12076

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

1

1

1

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

[[_2nd_order, _exact, _linear, _homogeneous]]

4.221

12077

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

1

1

1

second order series method. Regular singular point. Repeated root

[[_2nd_order, _with_linear_symmetries]]

1.259

12078

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

1

1

1

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

[_Bessel]

3.886

12079

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

1

1

1

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

[_Bessel]

1.843

12080

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

i.c.

1

1

2

system of linear ODEs

system of linear ODEs

0.843

12081

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

i.c.

1

1

2

system of linear ODEs

system of linear ODEs

1.29

12082

\[ {}\left [\begin {array}{c} x^{\prime }=2 x+2 y \\ y^{\prime }=6 x+3 y+{\mathrm e}^{t} \end {array}\right ] \]

i.c.

1

1

2

system of linear ODEs

system of linear ODEs

0.815

12083

\[ {}\left [\begin {array}{c} x^{\prime }=5 x-4 y+{\mathrm e}^{3 t} \\ y^{\prime }=x+y \end {array}\right ] \]

i.c.

1

1

2

system of linear ODEs

system of linear ODEs

0.822

12084

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

i.c.

1

1

2

system of linear ODEs

system of linear ODEs

1.639

12085

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

i.c.

1

1

2

system of linear ODEs

system of linear ODEs

1.054

12086

\[ {}\left [\begin {array}{c} x^{\prime }=8 x+14 y \\ y^{\prime }=7 x+y \end {array}\right ] \]

i.c.

1

1

2

system of linear ODEs

system of linear ODEs

0.451

12087

\(\left [\begin {array}{cc} 2 & 2 \\ 0 & -4 \end {array}\right ]\)

Eigenvectors

N/A

N/A

0.153

12088

\(\left [\begin {array}{cc} 7 & -2 \\ 26 & -1 \end {array}\right ]\)

Eigenvectors

N/A

N/A

0.256

12089

\(\left [\begin {array}{cc} 9 & 2 \\ 2 & 6 \end {array}\right ]\)

Eigenvectors

N/A

N/A

0.185

12090

\(\left [\begin {array}{cc} 7 & 1 \\ -4 & 11 \end {array}\right ]\)

Eigenvectors

N/A

N/A

0.122

12091

\(\left [\begin {array}{cc} 2 & -3 \\ 3 & 2 \end {array}\right ]\)

Eigenvectors

N/A

N/A

0.223

12092

\(\left [\begin {array}{cc} 6 & 0 \\ 0 & -13 \end {array}\right ]\)

Eigenvectors

N/A

N/A

0.126

12093

\(\left [\begin {array}{cc} 4 & -2 \\ 1 & 2 \end {array}\right ]\)

Eigenvectors

N/A

N/A

0.228

12094

\(\left [\begin {array}{cc} 3 & -1 \\ 1 & 1 \end {array}\right ]\)

Eigenvectors

N/A

N/A

0.103

12095

\(\left [\begin {array}{cc} -7 & 6 \\ 12 & -1 \end {array}\right ]\)

Eigenvectors

N/A

N/A

0.175

12096

\[ {}\left [\begin {array}{c} x^{\prime }=8 x+14 y \\ y^{\prime }=7 x+y \end {array}\right ] \]

1

1

2

system of linear ODEs

system of linear ODEs

0.428

12097

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

1

1

2

system of linear ODEs

system of linear ODEs

0.363

12098

\[ {}\left [\begin {array}{c} x^{\prime }=11 x-2 y \\ y^{\prime }=3 x+4 y \end {array}\right ] \]

1

1

2

system of linear ODEs

system of linear ODEs

0.445

12099

\[ {}\left [\begin {array}{c} x^{\prime }=x+20 y \\ y^{\prime }=40 x-19 y \end {array}\right ] \]

1

1

2

system of linear ODEs

system of linear ODEs

0.45

12100

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

1

1

2

system of linear ODEs

system of linear ODEs

0.407

12101

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

1

1

2

system of linear ODEs

system of linear ODEs

1.425

12102

\[ {}\left [\begin {array}{c} x^{\prime }=-2 x+3 y \\ y^{\prime }=-6 x+4 y \end {array}\right ] \]

1

1

2

system of linear ODEs

system of linear ODEs

0.66

12103

\[ {}\left [\begin {array}{c} x^{\prime }=-11 x-2 y \\ y^{\prime }=13 x-9 y \end {array}\right ] \]

1

1

2

system of linear ODEs

system of linear ODEs

0.72

12104

\[ {}\left [\begin {array}{c} x^{\prime }=7 x-5 y \\ y^{\prime }=10 x-3 y \end {array}\right ] \]

1

1

2

system of linear ODEs

system of linear ODEs

0.666

12105

\[ {}\left [\begin {array}{c} x^{\prime }=5 x-4 y \\ y^{\prime }=x+y \end {array}\right ] \]

1

1

2

system of linear ODEs

system of linear ODEs

0.413

12106

\[ {}\left [\begin {array}{c} x^{\prime }=-6 x+2 y \\ y^{\prime }=-2 x-2 y \end {array}\right ] \]

1

1

2

system of linear ODEs

system of linear ODEs

0.428

12107

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

1

1

2

system of linear ODEs

system of linear ODEs

0.427

12108

\[ {}\left [\begin {array}{c} x^{\prime }=13 x \\ y^{\prime }=13 y \end {array}\right ] \]

1

1

2

system of linear ODEs

system of linear ODEs

0.308

12109

\[ {}\left [\begin {array}{c} x^{\prime }=7 x-4 y \\ y^{\prime }=x+3 y \end {array}\right ] \]

1

1

2

system of linear ODEs

system of linear ODEs

0.435

12110

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

1

1

2

system of linear ODEs

system of linear ODEs

0.297