2.20.11 Mathematical methods for physics and engineering, Riley, Hobson, Bence, second edition, 2002

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

Table 2.400: Mathematical methods for physics and engineering, Riley, Hobson, Bence, second edition, 2002

#

ODE

A

B

C

Program classification

CAS classification

Solved?

Verified?

time (sec)

2486

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

1

1

2

exact, separable, first_order_ode_lie_symmetry_lookup

[_separable]

0.509

2487

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

1

1

1

exact, linear, separable, homogeneousTypeD2, first_order_ode_lie_symmetry_lookup

[_separable]

1.223

2488

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

1

1

1

exact, riccati, separable, first_order_ode_lie_symmetry_lookup

[_separable]

0.536

2489

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

1

1

4

exact

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

1.227

2490

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

1

1

1

linear, homogeneousTypeD2, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[_linear]

0.684

2491

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

1

1

1

exactWithIntegrationFactor

[[_1st_order, ‘_with_symmetry_[F(x)*G(y),0]‘], [_Abel, ‘2nd type‘, ‘class B‘]]

3.886

2492

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

1

1

1

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[_linear]

1.754

2493

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

1

1

1

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[_linear]

1.731

2494

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

1

1

3

exactWithIntegrationFactor, first_order_ode_lie_symmetry_calculated

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

0.571

2495

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

1

1

2

bernoulli, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[_rational, _Bernoulli]

0.653

2496

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

1

1

1

homogeneousTypeD2, first_order_ode_lie_symmetry_calculated

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

0.97

2497

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

1

1

1

homogeneousTypeC, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[[_homogeneous, ‘class C‘], [_Abel, ‘2nd type‘, ‘class C‘], _dAlembert]

0.549

2498

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

1

1

1

first_order_ode_lie_symmetry_calculated

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

0.69

2499

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

1

1

1

exact, separable, first_order_ode_lie_symmetry_lookup

[_separable]

1.569

2500

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

i.c.

1

1

2

exact, first_order_ode_lie_symmetry_calculated

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

1.697

2501

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

1

1

1

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[_linear]

0.648

2502

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

1

1

1

exact, riccati, separable, first_order_ode_lie_symmetry_lookup

[_separable]

0.487

2503

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

i.c.

1

1

1

linear, homogeneousTypeD2, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[_linear]

0.706

2504

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

i.c.

1

1

1

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[_linear]

0.865

2505

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

i.c.

1

1

1

riccati, homogeneousTypeD2, first_order_ode_lie_symmetry_calculated

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

1.181

2506

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

1

1

1

riccati, homogeneousTypeD2, first_order_ode_lie_symmetry_calculated

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

0.727

2507

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

i.c.

1

1

1

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[_linear]

1.245

2508

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

1

1

1

homogeneousTypeMapleC, first_order_ode_lie_symmetry_calculated

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

1.904

2509

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

i.c.

1

1

1

riccati, bernoulli, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

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

1.586

2510

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

i.c.

1

1

1

exactWithIntegrationFactor

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

6.582

2511

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

i.c.

1

1

1

exactWithIntegrationFactor

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

6.447

2512

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

i.c.

1

1

1

second_order_ode_missing_x, second_order_ode_missing_y, second_order_nonlinear_solved_by_mainardi_lioville_method

[[_2nd_order, _missing_x], _Liouville, [_2nd_order, _reducible, _mu_xy]]

1.794

2513

\[ {}x^{\prime \prime }+\omega _{0}^{2} x = a \cos \left (\omega t \right ) \]

i.c.

1

1

1

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _linear, _nonhomogeneous]]

0.99

2514

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

i.c.

1

1

1

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _missing_x]]

0.526

2515

\[ {}f^{\prime \prime }+2 f^{\prime }+5 f = {\mathrm e}^{-t} \cos \left (3 t \right ) \]

i.c.

1

1

1

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _linear, _nonhomogeneous]]

0.778

2516

\[ {}f^{\prime \prime }+6 f^{\prime }+9 f = {\mathrm e}^{-t} \]

i.c.

1

1

1

kovacic, second_order_linear_constant_coeff, linear_second_order_ode_solved_by_an_integrating_factor

[[_2nd_order, _with_linear_symmetries]]

0.615

2517

\[ {}f^{\prime \prime }+8 f^{\prime }+12 f = 12 \,{\mathrm e}^{-4 t} \]

i.c.

1

1

1

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _with_linear_symmetries]]

0.654

2518

\[ {}f^{\prime \prime }+8 f^{\prime }+12 f = 12 \,{\mathrm e}^{-4 t} \]

i.c.

1

1

1

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _with_linear_symmetries]]

0.59

2519

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

1

1

1

kovacic, second_order_linear_constant_coeff, linear_second_order_ode_solved_by_an_integrating_factor

[[_2nd_order, _with_linear_symmetries]]

0.407

2520

\[ {}y^{\prime \prime \prime }-12 y^{\prime }+16 y = 32 x -8 \]

1

1

1

higher_order_linear_constant_coefficients_ODE

[[_3rd_order, _with_linear_symmetries]]

0.554

2521

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

1

0

1

unknown

[[_2nd_order, _with_linear_symmetries], [_2nd_order, _reducible, _mu_xy]]

N/A

0.431

2522

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

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

[[_2nd_order, _with_linear_symmetries]]

1.502

2523

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

1

1

1

kovacic, 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

[[_2nd_order, _exact, _linear, _nonhomogeneous]]

1.731

2524

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

1

1

1

kovacic, second_order_bessel_ode, exact linear second order ode, second_order_integrable_as_is

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

1.487

2525

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

1

1

1

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _linear, _nonhomogeneous]]

0.621

2526

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

1

1

1

kovacic, second_order_linear_constant_coeff, linear_second_order_ode_solved_by_an_integrating_factor

[[_2nd_order, _linear, _nonhomogeneous]]

0.429

2527

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

1

0

2

unknown

[[_3rd_order, _exact, _nonlinear]]

N/A

0.0

2528

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

1

1

1

higher_order_missing_y

[[_3rd_order, _missing_y]]

0.451

2529

\[ {}y^{\prime \prime }+4 x y^{\prime }+\left (4 x^{2}+6\right ) y = {\mathrm e}^{-x^{2}} \sin \left (2 x \right ) \]

1

1

1

kovacic, second_order_change_of_variable_on_y_method_1

[[_2nd_order, _linear, _nonhomogeneous]]

1.322

2530

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

1

2

1

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

[_Gegenbauer]

0.898

2531

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

1

1

1

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

[[_2nd_order, _with_linear_symmetries]]

0.984

2532

\[ {}z y^{\prime \prime }-2 y^{\prime }+9 z^{5} y = 0 \]

1

1

1

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

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

0.749

2533

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

1

2

1

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

[[_2nd_order, _with_linear_symmetries]]

0.702

2534

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

1

1

1

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

[[_2nd_order, _with_linear_symmetries]]

0.967

2535

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

1

1

1

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

[_Lienard]

0.766

2536

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

1

2

1

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

[[_2nd_order, _exact, _linear, _homogeneous]]

0.505

2537

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

1

1

1

second order series method. Regular singular point. Repeated root

[_Jacobi]

1.181

2538

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

1

1

1

second order series method. Regular singular point. Repeated root

[[_2nd_order, _with_linear_symmetries]]

0.787

2539

\[ {}\left (z^{2}+5 z +6\right ) y^{\prime \prime }+2 y = 0 \]

1

2

1

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

[[_2nd_order, _with_linear_symmetries]]

0.756

2540

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

1

2

1

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

[[_Emden, _Fowler]]

0.793

2541

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

1

0

0

second order series method. Irregular singular point

[[_Emden, _Fowler]]

N/A

0.141

2542

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

1

1

1

second order series method. Regular singular point. Repeated root

[_Laguerre]

1.276

2543

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

1

2

1

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

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

0.903