2.16.139 Problems 13801 to 13900

Table 2.294: Main lookup table. Sorted sequentially by problem number.







#

ODE

Program classification

CAS classification

Solved?

Verified?

time (sec)








13801

\[ {}y^{\prime \prime }-36 y = 0 \]

kovacic, second_order_linear_constant_coeff, second_order_ode_can_be_made_integrable

[[_2nd_order, _missing_x]]

1.254








13802

\[ {}y^{\prime \prime }-9 y^{\prime }+14 y = 0 \]

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _missing_x]]

0.289








13803

\[ {}x^{2} y^{\prime \prime }-7 x y^{\prime }+16 y = 0 \]

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]]

1.699








13804

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

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]]

2.704








13805

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

higher_order_linear_constant_coefficients_ODE

[[_high_order, _missing_x]]

0.375








13806

\[ {}y^{\prime \prime }+6 y^{\prime }+9 y = 0 \]

kovacic, second_order_linear_constant_coeff, linear_second_order_ode_solved_by_an_integrating_factor

[[_2nd_order, _missing_x]]

0.334








13807

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

kovacic, second_order_linear_constant_coeff, second_order_ode_can_be_made_integrable

[[_2nd_order, _missing_x]]

1.802








13808

\[ {}x^{2} y^{\prime \prime }+7 x y^{\prime }+9 y = 0 \]

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]]

1.795








13809

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

kovacic, second_order_euler_ode

[[_Emden, _Fowler]]

0.704








13810

\[ {}y^{\left (5\right )}-6 y^{\prime \prime \prime \prime }+13 y^{\prime \prime \prime } = 0 \]

higher_order_linear_constant_coefficients_ODE

[[_high_order, _missing_x]]

0.478








13811

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

kovacic, second_order_euler_ode

[[_Emden, _Fowler]]

0.476








13812

\[ {}y^{\prime \prime }-6 y^{\prime }+25 y = 0 \]

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _missing_x]]

0.576








13813

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

second_order_ode_missing_x, second_order_ode_missing_y

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

0.581








13814

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

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

1.559








13815

\[ {}y^{\prime \prime }-8 y^{\prime }+25 y = 0 \]

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _missing_x]]

0.513








13816

\[ {}x^{2} y^{\prime \prime }+2 x y^{\prime }-30 y = 0 \]

kovacic, second_order_euler_ode, second_order_change_of_variable_on_x_method_2, second_order_change_of_variable_on_y_method_2

[[_Emden, _Fowler]]

1.296








13817

\[ {}y^{\prime \prime }+y^{\prime }-30 y = 0 \]

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _missing_x]]

0.28








13818

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

kovacic, second_order_linear_constant_coeff, linear_second_order_ode_solved_by_an_integrating_factor

[[_2nd_order, _missing_x]]

0.347








13819

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

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]]

1.596








13820

\[ {}y^{\prime \prime \prime }-6 y^{\prime \prime }+12 y^{\prime } = 8 \]

higher_order_linear_constant_coefficients_ODE

[[_3rd_order, _missing_x]]

1.616








13821

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

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

1.631








13822

\[ {}9 x^{2} y^{\prime \prime }+3 x y^{\prime }+y = 0 \]

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

1.632








13823

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

higher_order_linear_constant_coefficients_ODE

[[_high_order, _missing_x]]

0.348








13824

\[ {}2 y^{\prime \prime }-7 y^{\prime }+3 = 0 \]

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]]

1.789








13825

\[ {}y^{\prime \prime }+20 y^{\prime }+100 y = 0 \]

kovacic, second_order_linear_constant_coeff, linear_second_order_ode_solved_by_an_integrating_factor

[[_2nd_order, _missing_x]]

0.345








13826

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

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]]

2.601








13827

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

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]]

1.03








13828

\[ {}y^{\prime \prime }-9 y^{\prime }+14 y = 98 x^{2} \]

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _with_linear_symmetries]]

0.49








13829

\[ {}y^{\prime \prime }-12 y^{\prime }+36 y = 25 \sin \left (3 x \right ) \]

kovacic, second_order_linear_constant_coeff, linear_second_order_ode_solved_by_an_integrating_factor

[[_2nd_order, _linear, _nonhomogeneous]]

0.83








13830

\[ {}y^{\prime \prime }-9 y^{\prime }+14 y = 576 x^{2} {\mathrm e}^{-x} \]

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _linear, _nonhomogeneous]]

0.526








13831

\[ {}y^{\prime \prime }-12 y^{\prime }+36 y = 81 \,{\mathrm e}^{3 x} \]

kovacic, second_order_linear_constant_coeff, linear_second_order_ode_solved_by_an_integrating_factor

[[_2nd_order, _with_linear_symmetries]]

0.594








13832

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

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

[[_2nd_order, _with_linear_symmetries]]

1.888








13833

\[ {}y^{\prime \prime }-12 y^{\prime }+36 y = 3 x \,{\mathrm e}^{6 x}-2 \,{\mathrm e}^{6 x} \]

kovacic, second_order_linear_constant_coeff, linear_second_order_ode_solved_by_an_integrating_factor

[[_2nd_order, _linear, _nonhomogeneous]]

0.596








13834

\[ {}y^{\prime \prime }+36 y = 6 \sec \left (6 x \right ) \]

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _linear, _nonhomogeneous]]

1.027








13835

\[ {}x^{2} y^{\prime \prime }+2 x y^{\prime }-6 y = 18 \ln \left (x \right ) \]

kovacic, second_order_euler_ode, second_order_change_of_variable_on_x_method_2, second_order_change_of_variable_on_y_method_2

[[_2nd_order, _with_linear_symmetries]]

1.647








13836

\[ {}y^{\prime \prime }+6 y^{\prime }+9 y = 10 \,{\mathrm e}^{-3 x} \]

kovacic, second_order_linear_constant_coeff, linear_second_order_ode_solved_by_an_integrating_factor

[[_2nd_order, _with_linear_symmetries]]

0.547








13837

\[ {}2 x^{2} y^{\prime \prime }-x y^{\prime }-2 y = 10 x^{2} \]

kovacic, second_order_euler_ode, second_order_change_of_variable_on_x_method_2, second_order_change_of_variable_on_y_method_2

[[_2nd_order, _with_linear_symmetries]]

2.115








13838

\[ {}y^{\prime \prime }+6 y^{\prime }+9 y = 2 \cos \left (2 x \right ) \]

kovacic, second_order_linear_constant_coeff, linear_second_order_ode_solved_by_an_integrating_factor

[[_2nd_order, _linear, _nonhomogeneous]]

0.775








13839

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

second_order_ode_missing_y

[[_2nd_order, _missing_y]]

2.964








13840

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

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

[[_2nd_order, _with_linear_symmetries]]

6.336








13841

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

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, _nonhomogeneous]]

3.786








13842

\[ {}4 y^{\prime \prime }-12 y^{\prime }+9 y = x \,{\mathrm e}^{\frac {3 x}{2}} \]

kovacic, second_order_linear_constant_coeff, linear_second_order_ode_solved_by_an_integrating_factor

[[_2nd_order, _linear, _nonhomogeneous]]

0.587








13843

\[ {}3 y^{\prime \prime }+8 y^{\prime }-3 y = 123 x \sin \left (3 x \right ) \]

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _linear, _nonhomogeneous]]

1.035








13844

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

higher_order_linear_constant_coefficients_ODE

[[_3rd_order, _with_linear_symmetries]]

1.844








13845

\[ {}y^{\left (6\right )}-64 y = {\mathrm e}^{-2 x} \]

higher_order_linear_constant_coefficients_ODE

[[_high_order, _with_linear_symmetries]]

68.905








13846

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

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, _nonhomogeneous]]

3.776








13847

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

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, _nonhomogeneous]]

3.302








13848

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

i.c.

first_order_laplace

[_quadrature]

0.461








13849

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

i.c.

first_order_laplace

[[_linear, ‘class A‘]]

0.671








13850

\[ {}y^{\prime }+3 y = \operatorname {Heaviside}\left (t -4\right ) \]

i.c.

first_order_laplace

[[_linear, ‘class A‘]]

1.297








13851

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

i.c.

second_order_laplace

[[_2nd_order, _linear, _nonhomogeneous]]

0.528








13852

\[ {}y^{\prime \prime }+4 y = 20 \,{\mathrm e}^{4 t} \]

i.c.

second_order_laplace

[[_2nd_order, _with_linear_symmetries]]

0.656








13853

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

i.c.

second_order_laplace

[[_2nd_order, _linear, _nonhomogeneous]]

0.783








13854

\[ {}y^{\prime \prime }+4 y = 3 \operatorname {Heaviside}\left (t -2\right ) \]

i.c.

second_order_laplace

[[_2nd_order, _linear, _nonhomogeneous]]

1.299








13855

\[ {}y^{\prime \prime }+5 y^{\prime }+6 y = {\mathrm e}^{4 t} \]

i.c.

second_order_laplace

[[_2nd_order, _with_linear_symmetries]]

0.568








13856

\[ {}y^{\prime \prime }-5 y^{\prime }+6 y = t^{2} {\mathrm e}^{4 t} \]

i.c.

second_order_laplace

[[_2nd_order, _linear, _nonhomogeneous]]

0.594








13857

\[ {}y^{\prime \prime }-5 y^{\prime }+6 y = 7 \]

i.c.

second_order_laplace

[[_2nd_order, _missing_x]]

0.512








13858

\[ {}y^{\prime \prime }-4 y^{\prime }+13 y = {\mathrm e}^{2 t} \sin \left (3 t \right ) \]

i.c.

second_order_laplace

[[_2nd_order, _linear, _nonhomogeneous]]

0.938








13859

\[ {}y^{\prime \prime }+4 y^{\prime }+13 y = 4 t +2 \,{\mathrm e}^{2 t} \sin \left (3 t \right ) \]

i.c.

second_order_laplace

[[_2nd_order, _linear, _nonhomogeneous]]

1.158








13860

\[ {}y^{\prime \prime \prime }-27 y = {\mathrm e}^{-3 t} \]

i.c.

higher_order_laplace

[[_3rd_order, _with_linear_symmetries]]

2.95








13861

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

i.c.

unknown

[_Lienard]

N/A

0.0








13862

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

i.c.

second_order_laplace

[[_2nd_order, _missing_x]]

0.419








13863

\[ {}y^{\prime \prime }+9 y = 27 t^{3} \]

i.c.

second_order_laplace

[[_2nd_order, _linear, _nonhomogeneous]]

0.719








13864

\[ {}y^{\prime \prime }+8 y^{\prime }+7 y = 165 \,{\mathrm e}^{4 t} \]

i.c.

second_order_laplace

[[_2nd_order, _with_linear_symmetries]]

0.57








13865

\[ {}y^{\prime \prime }-8 y^{\prime }+17 y = 0 \]

i.c.

second_order_laplace

[[_2nd_order, _missing_x]]

0.472








13866

\[ {}y^{\prime \prime }-6 y^{\prime }+9 y = {\mathrm e}^{3 t} t^{2} \]

i.c.

second_order_laplace

[[_2nd_order, _linear, _nonhomogeneous]]

0.522








13867

\[ {}y^{\prime \prime }+6 y^{\prime }+13 y = 0 \]

i.c.

second_order_laplace

[[_2nd_order, _missing_x]]

0.504








13868

\[ {}y^{\prime \prime }+8 y^{\prime }+17 y = 0 \]

i.c.

second_order_laplace

[[_2nd_order, _missing_x]]

0.457








13869

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

i.c.

second_order_laplace

[[_2nd_order, _quadrature]]

0.699








13870

\[ {}y^{\prime \prime }-4 y^{\prime }+40 y = 122 \,{\mathrm e}^{-3 t} \]

i.c.

second_order_laplace

[[_2nd_order, _with_linear_symmetries]]

0.789








13871

\[ {}y^{\prime \prime }-9 y = 24 \,{\mathrm e}^{-3 t} \]

i.c.

second_order_laplace

[[_2nd_order, _with_linear_symmetries]]

0.559








13872

\[ {}y^{\prime \prime }-4 y^{\prime }+13 y = {\mathrm e}^{2 t} \sin \left (3 t \right ) \]

i.c.

second_order_laplace

[[_2nd_order, _linear, _nonhomogeneous]]

0.546








13873

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

i.c.

second_order_laplace

[[_2nd_order, _missing_x]]

0.49








13874

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

i.c.

second_order_laplace

[[_2nd_order, _with_linear_symmetries]]

0.644








13875

\[ {}y^{\prime \prime }+4 y = {\mathrm e}^{3 t} \]

i.c.

second_order_laplace

[[_2nd_order, _with_linear_symmetries]]

0.594








13876

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

i.c.

second_order_laplace

[[_2nd_order, _linear, _nonhomogeneous]]

0.449








13877

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

i.c.

second_order_laplace

[[_2nd_order, _linear, _nonhomogeneous]]

0.926








13878

\[ {}y^{\prime \prime }-6 y^{\prime }+9 y = 1 \]

i.c.

second_order_laplace

[[_2nd_order, _missing_x]]

0.493








13879

\[ {}y^{\prime \prime }-6 y^{\prime }+9 y = t \]

i.c.

second_order_laplace

[[_2nd_order, _with_linear_symmetries]]

0.581








13880

\[ {}y^{\prime \prime }-6 y^{\prime }+9 y = {\mathrm e}^{3 t} \]

i.c.

second_order_laplace

[[_2nd_order, _with_linear_symmetries]]

0.477








13881

\[ {}y^{\prime \prime }-6 y^{\prime }+9 y = {\mathrm e}^{-3 t} \]

i.c.

second_order_laplace

[[_2nd_order, _with_linear_symmetries]]

0.564








13882

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

i.c.

second_order_laplace

[[_2nd_order, _with_linear_symmetries]]

0.558








13883

\[ {}y^{\prime } = \operatorname {Heaviside}\left (t -3\right ) \]

i.c.

first_order_laplace

[_quadrature]

0.345








13884

\[ {}y^{\prime } = \operatorname {Heaviside}\left (t -3\right ) \]

i.c.

first_order_laplace

[_quadrature]

0.336








13885

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

i.c.

second_order_laplace

[[_2nd_order, _quadrature]]

0.45








13886

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

i.c.

second_order_laplace

[[_2nd_order, _quadrature]]

0.489








13887

\[ {}y^{\prime \prime }+9 y = \operatorname {Heaviside}\left (t -10\right ) \]

i.c.

second_order_laplace

[[_2nd_order, _linear, _nonhomogeneous]]

1.137








13888

\[ {}y^{\prime } = \left \{\begin {array}{cc} 0 & t <1 \\ 1 & 1

i.c.

first_order_laplace

[_quadrature]

0.509








13889

\[ {}y^{\prime \prime } = \left \{\begin {array}{cc} 0 & t <1 \\ 1 & 1

i.c.

second_order_laplace

[[_2nd_order, _quadrature]]

0.521








13890

\[ {}y^{\prime \prime }+9 y = \left \{\begin {array}{cc} 0 & t <1 \\ 1 & 1

i.c.

second_order_laplace

[[_2nd_order, _linear, _nonhomogeneous]]

4.169








13891

\[ {}y^{\prime } = 3 \delta \left (t -2\right ) \]

i.c.

first_order_laplace

[_quadrature]

0.337








13892

\[ {}y^{\prime } = \delta \left (t -2\right )-\delta \left (t -4\right ) \]

i.c.

first_order_laplace

[_quadrature]

0.356








13893

\[ {}y^{\prime \prime } = \delta \left (t -3\right ) \]

i.c.

second_order_laplace

[[_2nd_order, _quadrature]]

0.433








13894

\[ {}y^{\prime \prime } = \delta \left (-1+t \right )-\delta \left (t -4\right ) \]

i.c.

second_order_laplace

[[_2nd_order, _quadrature]]

0.514








13895

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

i.c.

first_order_laplace

[[_linear, ‘class A‘]]

1.068








13896

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

second_order_laplace

[[_2nd_order, _linear, _nonhomogeneous]]

1.799








13897

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

i.c.

second_order_laplace

[[_2nd_order, _linear, _nonhomogeneous]]

0.83








13898

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

i.c.

first_order_laplace

[[_linear, ‘class A‘]]

1.099








13899

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

second_order_laplace

[[_2nd_order, _missing_y]]

0.398








13900

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

i.c.

second_order_laplace

[[_2nd_order, _missing_y]]

1.04