2.16.126 Problems 12501 to 12600

Table 2.268: Main lookup table. Sorted sequentially by problem number.

#

ODE

Program classification

CAS classification

Solved?

Verified?

time (sec)

12501

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

kovacic, second_order_linear_constant_coeff, second_order_ode_can_be_made_integrable

[[_2nd_order, _missing_x]]

0.826

12502

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

kovacic, second_order_linear_constant_coeff, second_order_ode_can_be_made_integrable

[[_2nd_order, _missing_x]]

0.66

12503

\[ {}y^{\prime \prime }+12 y = 7 y^{\prime } \]

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _missing_x]]

0.283

12504

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

kovacic, second_order_linear_constant_coeff, linear_second_order_ode_solved_by_an_integrating_factor

[[_2nd_order, _missing_x]]

0.327

12505

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

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _missing_x]]

0.424

12506

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

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _missing_x]]

0.324

12507

\[ {}4 y^{\prime \prime }-12 y^{\prime }+9 y = 0 \]

kovacic, second_order_linear_constant_coeff, linear_second_order_ode_solved_by_an_integrating_factor

[[_2nd_order, _missing_x]]

0.328

12508

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

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _missing_x]]

0.439

12509

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

higher_order_linear_constant_coefficients_ODE

[[_high_order, _missing_x]]

0.305

12510

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

higher_order_linear_constant_coefficients_ODE

[[_3rd_order, _missing_x]]

0.244

12511

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

higher_order_linear_constant_coefficients_ODE

[[_3rd_order, _missing_x]]

0.154

12512

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

higher_order_linear_constant_coefficients_ODE

[[_high_order, _missing_x]]

0.276

12513

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

higher_order_linear_constant_coefficients_ODE

[[_high_order, _missing_x]]

0.745

12514

\[ {}y^{\prime \prime \prime \prime }-8 y^{\prime \prime }+16 y = 0 \]

higher_order_linear_constant_coefficients_ODE

[[_high_order, _missing_x]]

0.362

12515

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

higher_order_linear_constant_coefficients_ODE

[[_high_order, _missing_x]]

0.596

12516

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

higher_order_linear_constant_coefficients_ODE

[[_high_order, _missing_x]]

0.177

12517

\[ {}y^{\prime \prime }-7 y^{\prime }+12 y = x \]

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _with_linear_symmetries]]

0.388

12518

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

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _with_linear_symmetries]]

0.515

12519

\[ {}y^{\prime \prime }+y^{\prime }-2 y = 8 \sin \left (2 x \right ) \]

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _linear, _nonhomogeneous]]

0.523

12520

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

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _with_linear_symmetries]]

0.397

12521

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

kovacic, second_order_linear_constant_coeff, linear_second_order_ode_solved_by_an_integrating_factor

[[_2nd_order, _with_linear_symmetries]]

0.521

12522

\[ {}y^{\prime \prime }+6 y^{\prime }+5 y = {\mathrm e}^{2 x} \]

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _with_linear_symmetries]]

0.398

12523

\[ {}y^{\prime \prime }+9 y = 6 \,{\mathrm e}^{3 x} \]

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _with_linear_symmetries]]

0.523

12524

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

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]]

1.148

12525

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

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _linear, _nonhomogeneous]]

0.955

12526

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

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _linear, _nonhomogeneous]]

0.604

12527

\[ {}y^{\prime \prime \prime }-4 y^{\prime \prime }+5 y^{\prime }-2 y = 2 x +3 \]

higher_order_linear_constant_coefficients_ODE

[[_3rd_order, _with_linear_symmetries]]

0.585

12528

\[ {}y^{\prime \prime \prime \prime }-a^{4} y = 5 a^{4} {\mathrm e}^{x a} \sin \left (x a \right ) \]

higher_order_linear_constant_coefficients_ODE

[[_high_order, _linear, _nonhomogeneous]]

0.258

12529

\[ {}y^{\prime \prime \prime \prime }+2 a^{2} y^{\prime \prime }+a^{4} y = 8 \cos \left (x a \right ) \]

higher_order_linear_constant_coefficients_ODE

[[_high_order, _linear, _nonhomogeneous]]

0.906

12530

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

i.c.

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _missing_x]]

0.816

12531

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

i.c.

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _linear, _nonhomogeneous]]

1.307

12532

\[ {}y^{\prime \prime }-7 y^{\prime }+6 y = \sin \left (x \right ) \]

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _linear, _nonhomogeneous]]

0.477

12533

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

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _linear, _nonhomogeneous]]

0.509

12534

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

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _linear, _nonhomogeneous]]

0.885

12535

\[ {}\left [\begin {array}{c} x^{\prime }=y+1 \\ y^{\prime }=1+x \end {array}\right ] \]

i.c.

system of linear ODEs

system of linear ODEs

0.499

12536

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

i.c.

system of linear ODEs

system of linear ODEs

0.275

12537

\[ {}\left [\begin {array}{c} 4 x^{\prime }-y^{\prime }+3 x=\sin \left (t \right ) \\ x^{\prime }+y=\cos \left (t \right ) \end {array}\right ] \]

system of linear ODEs

system of linear ODEs

0.961

12538

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

second_order_ode_missing_x

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

3.893

12539

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

exact, riccati, separable, homogeneousTypeD2, first_order_ode_lie_symmetry_lookup

[_separable]

0.8

12540

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

dAlembert

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

0.393

12541

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

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _linear, _nonhomogeneous]]

0.435

12542

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

linear, homogeneousTypeD2, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[_linear]

1.156

12543

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

homogeneousTypeD, homogeneousTypeD2, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

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

1.165

12544

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

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _linear, _nonhomogeneous]]

0.616

12545

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

riccati, bernoulli, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[_Bernoulli]

0.868

12546

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

first_order_ode_lie_symmetry_calculated

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

0.849

12547

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

exact, separable, first_order_ode_lie_symmetry_lookup

[_separable]

1.802

12548

\[ {}\left [\begin {array}{c} x^{\prime }=2 x-3 y \\ y^{\prime }=5 x+6 y \end {array}\right ] \]

system of linear ODEs

system of linear ODEs

0.704

12549

\[ {}\left [\begin {array}{c} x^{\prime }=-4 x-10 y \\ y^{\prime }=x-2 y \end {array}\right ] \]

system of linear ODEs

system of linear ODEs

0.426

12550

\[ {}\left [\begin {array}{c} x^{\prime }=12 x+18 y \\ y^{\prime }=-8 x-12 y \end {array}\right ] \]

system of linear ODEs

system of linear ODEs

0.224

12551

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

i.c.

riccati

[[_Riccati, _special]]

4.751

12552

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

i.c.

exact, linear, first_order_ode_lie_symmetry_lookup

[_linear]

0.924

12553

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

i.c.

system of linear ODEs

system of linear ODEs

0.322

12554

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

system of linear ODEs

system of linear ODEs

0.38

12555

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

system of linear ODEs

system of linear ODEs

0.441

12556

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

system of linear ODEs

system of linear ODEs

0.448

12557

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

system of linear ODEs

system of linear ODEs

0.432

12558

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

system of linear ODEs

system of linear ODEs

0.287

12559

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

system of linear ODEs

system of linear ODEs

0.66

12560

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

system of linear ODEs

system of linear ODEs

0.288

12561

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

system of linear ODEs

system of linear ODEs

0.262

12562

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

system of linear ODEs

system of linear ODEs

0.255

12563

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

system of linear ODEs

system of linear ODEs

0.242

12564

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

system of linear ODEs

system of linear ODEs

0.428

12565

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

system of linear ODEs

system of linear ODEs

0.218

12566

\[ {}\left [\begin {array}{c} x^{\prime }=0 \\ y^{\prime }=x \end {array}\right ] \]

system of linear ODEs

system of linear ODEs

0.186

12567

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

second_order_ode_missing_x, second_order_ode_can_be_made_integrable

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

2.03

12568

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

second_order_ode_missing_x, second_order_ode_can_be_made_integrable

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

1.734

12569

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

second_order_ode_missing_x

[[_2nd_order, _missing_x]]

N/A

0.488

12570

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

second_order_ode_missing_x

[[_2nd_order, _missing_x]]

N/A

0.491

12571

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

second_order_ode_missing_x, second_order_ode_can_be_made_integrable

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

85.822

12572

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

system of linear ODEs

system of linear ODEs

0.387

12573

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

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]]

1.733

12574

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

exact, linear, separable, homogeneousTypeD2, first_order_ode_lie_symmetry_lookup

[_separable]

0.635

12575

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

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]]

1.487

12576

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

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _missing_x]]

0.287

12577

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

kovacic, second_order_euler_ode, exact linear second order ode, second_order_integrable_as_is

[[_2nd_order, _exact, _linear, _homogeneous]]

0.987

12578

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

quadrature

[_quadrature]

0.3

12579

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

linear, homogeneousTypeD2, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[_linear]

0.638

12580

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

quadrature

[_quadrature]

1.026

12581

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

exact, linear, separable, homogeneousTypeD2, first_order_ode_lie_symmetry_lookup

[_separable]

0.812

12582

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

quadrature

[_quadrature]

0.214

12583

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

kovacic, second_order_euler_ode, 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]]

1.102

12584

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

quadrature

[_quadrature]

0.306

12585

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

quadrature

[_quadrature]

0.274

12586

\[ {}y^{\prime \prime }-3 y^{\prime }-10 y = 0 \]

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _missing_x]]

0.276

12587

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

kovacic, second_order_linear_constant_coeff, linear_second_order_ode_solved_by_an_integrating_factor

[[_2nd_order, _missing_x]]

0.337

12588

\[ {}y^{\prime \prime \prime }-7 y^{\prime \prime }+12 y^{\prime } = 0 \]

higher_order_linear_constant_coefficients_ODE

[[_3rd_order, _missing_x]]

0.266

12589

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

exact, linear, separable, homogeneousTypeD2, first_order_ode_lie_symmetry_lookup

[_separable]

0.7

12590

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

kovacic, second_order_euler_ode, second_order_ode_missing_y

[[_2nd_order, _missing_y]]

0.579

12591

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

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

[[_2nd_order, _exact, _linear, _homogeneous]]

1.641

12592

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

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]]

1.111

12593

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

quadrature

[_quadrature]

0.437

12594

\[ {}{y^{\prime }}^{2}-9 x y = 0 \]

first_order_nonlinear_p_but_separable

[[_homogeneous, ‘class G‘]]

0.653

12595

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

quadrature

[_quadrature]

0.417

12596

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

exact, linear, separable, homogeneousTypeD2, first_order_ode_lie_symmetry_lookup

[_separable]

0.699

12597

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

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[[_linear, ‘class A‘]]

0.628

12598

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

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _missing_x]]

0.291

12599

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

exact, separable, first_order_ode_lie_symmetry_lookup

[_separable]

1.069

12600

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

kovacic, second_order_linear_constant_coeff, second_order_ode_can_be_made_integrable

[[_2nd_order, _missing_x]]

0.558