2.16.29 Problems 2801 to 2900

Table 2.74: Main lookup table. Sorted sequentially by problem number.







#

ODE

Program classification

CAS classification

Solved?

Verified?

time (sec)








2801

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

i.c.

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _linear, _nonhomogeneous]]

0.906








2802

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

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_1, second_order_change_of_variable_on_y_method_2, linear_second_order_ode_solved_by_an_integrating_factor

[[_2nd_order, _exact, _linear, _nonhomogeneous]]

2.421








2803

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

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_1, second_order_change_of_variable_on_y_method_2, linear_second_order_ode_solved_by_an_integrating_factor

[[_2nd_order, _exact, _linear, _nonhomogeneous]]

2.505








2804

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

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]]

5.307








2805

\[ {}x^{2} y^{\prime \prime }-x y^{\prime }+5 y = 8 x \ln \left (x \right )^{2} \]

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, _linear, _nonhomogeneous]]

7.878








2806

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

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

[[_2nd_order, _linear, _nonhomogeneous]]

1.737








2807

\[ {}x^{2} y^{\prime \prime }+6 x y^{\prime }+6 y = 4 \,{\mathrm e}^{2 x} \]

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_1, second_order_change_of_variable_on_y_method_2, linear_second_order_ode_solved_by_an_integrating_factor

[[_2nd_order, _linear, _nonhomogeneous]]

1.735








2808

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

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, _linear, _nonhomogeneous]]

1.603








2809

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

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, _linear, _nonhomogeneous]]

9.447








2810

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

i.c.

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]]

2.285








2811

\[ {}t^{2} y^{\prime \prime }+t y^{\prime }+25 y = 0 \]

i.c.

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)]‘]]

1.694








2812

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

reduction_of_order

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

0.26








2813

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

reduction_of_order

[[_2nd_order, _with_linear_symmetries]]

0.375








2814

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

reduction_of_order

[[_2nd_order, _with_linear_symmetries]]

0.418








2815

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

reduction_of_order

[_Gegenbauer]

0.384








2816

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

reduction_of_order

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

0.375








2817

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

reduction_of_order

[[_2nd_order, _with_linear_symmetries]]

0.425








2818

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

reduction_of_order

[[_2nd_order, _linear, _nonhomogeneous]]

0.385








2819

\[ {}x y^{\prime \prime }-\left (2 x +1\right ) y^{\prime }+2 y = 8 x^{2} {\mathrm e}^{2 x} \]

reduction_of_order

[[_2nd_order, _with_linear_symmetries]]

0.377








2820

\[ {}x^{2} y^{\prime \prime }-3 x y^{\prime }+4 y = 8 x^{4} \]

reduction_of_order

[[_2nd_order, _with_linear_symmetries]]

0.298








2821

\[ {}y^{\prime \prime }-6 y^{\prime }+9 y = 15 \,{\mathrm e}^{3 x} \sqrt {x} \]

reduction_of_order

[[_2nd_order, _linear, _nonhomogeneous]]

0.332








2822

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

reduction_of_order

[[_2nd_order, _linear, _nonhomogeneous]]

0.333








2823

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

reduction_of_order

[[_2nd_order, _linear, _nonhomogeneous]]

0.283








2824

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

higher_order_linear_constant_coefficients_ODE

[[_3rd_order, _missing_x]]

0.226








2825

\[ {}y^{\prime \prime \prime }+11 y^{\prime \prime }+36 y^{\prime }+26 y = 0 \]

higher_order_linear_constant_coefficients_ODE

[[_3rd_order, _missing_x]]

0.273








2826

\[ {}y^{\prime \prime }+6 y^{\prime }+9 y = 4 \,{\mathrm e}^{-3 x} \]

kovacic, second_order_linear_constant_coeff, linear_second_order_ode_solved_by_an_integrating_factor

[[_2nd_order, _with_linear_symmetries]]

0.435








2827

\[ {}y^{\prime \prime }+6 y^{\prime }+9 y = 4 \,{\mathrm e}^{-2 x} \]

kovacic, second_order_linear_constant_coeff, linear_second_order_ode_solved_by_an_integrating_factor

[[_2nd_order, _with_linear_symmetries]]

0.418








2828

\[ {}y^{\prime \prime \prime }-6 y^{\prime \prime }+25 y^{\prime } = x^{2} \]

higher_order_linear_constant_coefficients_ODE

[[_3rd_order, _missing_y]]

1.04








2829

\[ {}y^{\prime \prime \prime }-6 y^{\prime \prime }+25 y^{\prime } = \sin \left (4 x \right ) \]

higher_order_linear_constant_coefficients_ODE

[[_3rd_order, _missing_y]]

1.569








2830

\[ {}y^{\prime \prime \prime }+9 y^{\prime \prime }+24 y^{\prime }+16 y = 8 \,{\mathrm e}^{-x}+1 \]

higher_order_linear_constant_coefficients_ODE

[[_3rd_order, _with_linear_symmetries]]

0.529








2831

\[ {}y^{\prime \prime }-4 y = 5 \,{\mathrm e}^{x} \]

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _with_linear_symmetries]]

0.35








2832

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

kovacic, second_order_linear_constant_coeff, linear_second_order_ode_solved_by_an_integrating_factor

[[_2nd_order, _linear, _nonhomogeneous]]

0.457








2833

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

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _with_linear_symmetries]]

0.389








2834

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

second_order_airy, second_order_bessel_ode

[[_2nd_order, _linear, _nonhomogeneous]]

1.121








2835

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

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _linear, _nonhomogeneous]]

1.698








2836

\[ {}y^{\prime \prime }+2 y^{\prime }-3 y = 5 \,{\mathrm e}^{x} \]

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _with_linear_symmetries]]

0.412








2837

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

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _linear, _nonhomogeneous]]

0.507








2838

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

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _linear, _nonhomogeneous]]

0.806








2839

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

i.c.

first_order_laplace

[[_linear, ‘class A‘]]

0.441








2840

\[ {}y^{\prime }+y = 8 \,{\mathrm e}^{3 t} \]

i.c.

first_order_laplace

[[_linear, ‘class A‘]]

0.39








2841

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

i.c.

first_order_laplace

[[_linear, ‘class A‘]]

0.418








2842

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

i.c.

first_order_laplace

[[_linear, ‘class A‘]]

0.377








2843

\[ {}y^{\prime }-y = 6 \cos \left (t \right ) \]

i.c.

first_order_laplace

[[_linear, ‘class A‘]]

0.501








2844

\[ {}y^{\prime }-y = 5 \sin \left (2 t \right ) \]

i.c.

first_order_laplace

[[_linear, ‘class A‘]]

0.529








2845

\[ {}y^{\prime }+y = 5 \,{\mathrm e}^{t} \sin \left (t \right ) \]

i.c.

first_order_laplace

[[_linear, ‘class A‘]]

0.586








2846

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

i.c.

second_order_laplace

[[_2nd_order, _missing_x]]

0.362








2847

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

i.c.

second_order_laplace

[[_2nd_order, _missing_x]]

0.313








2848

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

i.c.

second_order_laplace

[[_2nd_order, _missing_x]]

0.366








2849

\[ {}y^{\prime \prime }-y^{\prime }-12 y = 36 \]

i.c.

second_order_laplace

[[_2nd_order, _missing_x]]

0.35








2850

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

i.c.

second_order_laplace

[[_2nd_order, _with_linear_symmetries]]

0.391








2851

\[ {}y^{\prime \prime }-3 y^{\prime }+2 y = 4 \,{\mathrm e}^{3 t} \]

i.c.

second_order_laplace

[[_2nd_order, _with_linear_symmetries]]

0.377








2852

\[ {}y^{\prime \prime }-2 y^{\prime } = 30 \,{\mathrm e}^{-3 t} \]

i.c.

second_order_laplace

[[_2nd_order, _missing_y]]

0.413








2853

\[ {}y^{\prime \prime }-y = 12 \,{\mathrm e}^{2 t} \]

i.c.

second_order_laplace

[[_2nd_order, _with_linear_symmetries]]

0.38








2854

\[ {}y^{\prime \prime }+4 y = 10 \,{\mathrm e}^{-t} \]

i.c.

second_order_laplace

[[_2nd_order, _with_linear_symmetries]]

0.425








2855

\[ {}y^{\prime \prime }-y^{\prime }-6 y = 12-6 \,{\mathrm e}^{t} \]

i.c.

second_order_laplace

[[_2nd_order, _with_linear_symmetries]]

0.469








2856

\[ {}y^{\prime \prime }-y = 6 \cos \left (t \right ) \]

i.c.

second_order_laplace

[[_2nd_order, _linear, _nonhomogeneous]]

0.478








2857

\[ {}y^{\prime \prime }-9 y = 13 \sin \left (2 t \right ) \]

i.c.

second_order_laplace

[[_2nd_order, _linear, _nonhomogeneous]]

0.551








2858

\[ {}y^{\prime \prime }-y = 8 \sin \left (t \right )-6 \cos \left (t \right ) \]

i.c.

second_order_laplace

[[_2nd_order, _linear, _nonhomogeneous]]

0.747








2859

\[ {}y^{\prime \prime }-y^{\prime }-2 y = 10 \cos \left (t \right ) \]

i.c.

second_order_laplace

[[_2nd_order, _linear, _nonhomogeneous]]

0.477








2860

\[ {}y^{\prime \prime }+5 y^{\prime }+4 y = 20 \sin \left (2 t \right ) \]

i.c.

second_order_laplace

[[_2nd_order, _linear, _nonhomogeneous]]

0.529








2861

\[ {}y^{\prime \prime }+5 y^{\prime }+4 y = 20 \sin \left (2 t \right ) \]

i.c.

second_order_laplace

[[_2nd_order, _linear, _nonhomogeneous]]

0.438








2862

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

i.c.

second_order_laplace

[[_2nd_order, _linear, _nonhomogeneous]]

0.553








2863

\[ {}y^{\prime \prime }+4 y = 9 \sin \left (t \right ) \]

i.c.

second_order_laplace

[[_2nd_order, _linear, _nonhomogeneous]]

0.64








2864

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

i.c.

second_order_laplace

[[_2nd_order, _linear, _nonhomogeneous]]

0.542








2865

\[ {}y^{\prime \prime }+9 y = 7 \sin \left (4 t \right )+14 \cos \left (4 t \right ) \]

i.c.

second_order_laplace

[[_2nd_order, _linear, _nonhomogeneous]]

1.015








2866

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

i.c.

second_order_laplace

[[_2nd_order, _missing_x]]

0.282








2867

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

i.c.

first_order_laplace

[[_linear, ‘class A‘]]

0.896








2868

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

i.c.

first_order_laplace

[[_linear, ‘class A‘]]

1.053








2869

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

i.c.

first_order_laplace

[[_linear, ‘class A‘]]

1.749








2870

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

i.c.

first_order_laplace

[[_linear, ‘class A‘]]

1.399








2871

\[ {}y^{\prime }+3 y = \left \{\begin {array}{cc} 1 & 0\le t <1 \\ 0 & 1\le t \end {array}\right . \]

i.c.

first_order_laplace

[[_linear, ‘class A‘]]

1.232








2872

\[ {}y^{\prime }-3 y = \left \{\begin {array}{cc} \sin \left (t \right ) & 0\le t <\frac {\pi }{2} \\ 1 & \frac {\pi }{2}\le t \end {array}\right . \]

i.c.

first_order_laplace

[[_linear, ‘class A‘]]

1.909








2873

\[ {}y^{\prime }-3 y = -10 \,{\mathrm e}^{-t +a} \sin \left (-2 t +2 a \right ) \operatorname {Heaviside}\left (t -a \right ) \]

i.c.

first_order_laplace

[[_linear, ‘class A‘]]

13.737








2874

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

i.c.

second_order_laplace

[[_2nd_order, _linear, _nonhomogeneous]]

0.826








2875

\[ {}y^{\prime \prime }-y^{\prime }-2 y = 1-3 \operatorname {Heaviside}\left (t -2\right ) \]

i.c.

second_order_laplace

[[_2nd_order, _linear, _nonhomogeneous]]

1.349








2876

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

i.c.

second_order_laplace

[[_2nd_order, _linear, _nonhomogeneous]]

1.668








2877

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

i.c.

second_order_laplace

[[_2nd_order, _linear, _nonhomogeneous]]

0.913








2878

\[ {}y^{\prime \prime }+3 y^{\prime }+2 y = -10 \operatorname {Heaviside}\left (t -\frac {\pi }{4}\right ) \cos \left (t +\frac {\pi }{4}\right ) \]

i.c.

second_order_laplace

[[_2nd_order, _linear, _nonhomogeneous]]

1.341








2879

\[ {}y^{\prime \prime }+y^{\prime }-6 y = 30 \operatorname {Heaviside}\left (-1+t \right ) {\mathrm e}^{1-t} \]

i.c.

second_order_laplace

[[_2nd_order, _linear, _nonhomogeneous]]

1.366








2880

\[ {}y^{\prime \prime }+4 y^{\prime }+5 y = 5 \operatorname {Heaviside}\left (t -3\right ) \]

i.c.

second_order_laplace

[[_2nd_order, _linear, _nonhomogeneous]]

2.24








2881

\[ {}y^{\prime \prime }-2 y^{\prime }+5 y = 2 \sin \left (t \right )+\operatorname {Heaviside}\left (t -\frac {\pi }{2}\right ) \left (1+\cos \left (t \right )\right ) \]

i.c.

second_order_laplace

[[_2nd_order, _linear, _nonhomogeneous]]

3.093








2882

\[ {}y^{\prime }-y = \left \{\begin {array}{cc} 2 & 0\le t <1 \\ -1 & 1\le t \end {array}\right . \]

i.c.

first_order_laplace

[[_linear, ‘class A‘]]

1.273








2883

\[ {}y^{\prime }-y = \left \{\begin {array}{cc} 2 & 0\le t <1 \\ -1 & 1\le t \end {array}\right . \]

i.c.

linear, first_order_ode_lie_symmetry_lookup

[[_linear, ‘class A‘]]

2.247








2884

\[ {}y^{\prime }+y = \delta \left (t -5\right ) \]

i.c.

first_order_laplace

[[_linear, ‘class A‘]]

0.756








2885

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

i.c.

first_order_laplace

[[_linear, ‘class A‘]]

0.748








2886

\[ {}y^{\prime }+4 y = 3 \delta \left (-1+t \right ) \]

i.c.

first_order_laplace

[[_linear, ‘class A‘]]

0.836








2887

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

i.c.

first_order_laplace

[[_linear, ‘class A‘]]

0.939








2888

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

i.c.

second_order_laplace

[[_2nd_order, _linear, _nonhomogeneous]]

0.901








2889

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

i.c.

second_order_laplace

[[_2nd_order, _linear, _nonhomogeneous]]

0.839








2890

\[ {}y^{\prime \prime }+2 y^{\prime }+5 y = \delta \left (t -\frac {\pi }{2}\right ) \]

i.c.

second_order_laplace

[[_2nd_order, _linear, _nonhomogeneous]]

0.927








2891

\[ {}y^{\prime \prime }-4 y^{\prime }+13 y = \delta \left (t -\frac {\pi }{4}\right ) \]

i.c.

second_order_laplace

[[_2nd_order, _linear, _nonhomogeneous]]

1.868








2892

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

i.c.

second_order_laplace

[[_2nd_order, _linear, _nonhomogeneous]]

0.972








2893

\[ {}y^{\prime \prime }+6 y^{\prime }+13 y = \delta \left (t -\frac {\pi }{4}\right ) \]

i.c.

second_order_laplace

[[_2nd_order, _linear, _nonhomogeneous]]

1.152








2894

\[ {}y^{\prime \prime }+9 y = 15 \sin \left (2 t \right )+\delta \left (t -\frac {\pi }{6}\right ) \]

i.c.

second_order_laplace

[[_2nd_order, _linear, _nonhomogeneous]]

1.599








2895

\[ {}y^{\prime \prime }+16 y = 4 \cos \left (3 t \right )+\delta \left (t -\frac {\pi }{3}\right ) \]

i.c.

second_order_laplace

[[_2nd_order, _linear, _nonhomogeneous]]

1.829








2896

\[ {}y^{\prime \prime }+2 y^{\prime }+5 y = 4 \sin \left (t \right )+\delta \left (t -\frac {\pi }{6}\right ) \]

i.c.

second_order_laplace

[[_2nd_order, _linear, _nonhomogeneous]]

2.188








2897

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

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

[[_2nd_order, _missing_x]]

0.402








2898

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

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

[_erf]

0.655








2899

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

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

[[_2nd_order, _exact, _linear, _homogeneous]]

0.526








2900

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

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

[[_2nd_order, _exact, _linear, _homogeneous]]

0.652