2.16.129 Problems 12801 to 12900

Table 2.274: Main lookup table. Sorted sequentially by problem number.







#

ODE

Program classification

CAS classification

Solved?

Verified?

time (sec)








12801

\[ {}y^{\prime \prime }+9 y = 18 \,{\mathrm e}^{3 x} \]

i.c.

second_order_laplace

[[_2nd_order, _with_linear_symmetries]]

0.52








12802

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

i.c.

second_order_laplace

[[_2nd_order, _missing_x]]

0.37








12803

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

i.c.

second_order_laplace

[[_2nd_order, _with_linear_symmetries]]

0.44








12804

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

i.c.

second_order_laplace

[[_2nd_order, _linear, _nonhomogeneous]]

0.49








12805

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

i.c.

higher_order_laplace

[[_3rd_order, _missing_x]]

0.504








12806

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

i.c.

first_order_laplace

[[_linear, ‘class A‘]]

1.227








12807

\[ {}y^{\prime \prime }-y^{\prime }-2 y = \left \{\begin {array}{cc} 1 & 2\le x <4 \\ 0 & \operatorname {otherwise} \end {array}\right . \]

i.c.

second_order_laplace

[[_2nd_order, _linear, _nonhomogeneous]]

3.85








12808

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

i.c.

second_order_laplace

[[_2nd_order, _missing_y]]

1.462








12809

\[ {}y^{\prime \prime }-2 y^{\prime }+y = \left \{\begin {array}{cc} 0 & 0\le x <1 \\ x^{2}-2 x +3 & 1\le x \end {array}\right . \]

i.c.

second_order_laplace

[[_2nd_order, _linear, _nonhomogeneous]]

2.473








12810

\[ {}y^{\prime \prime }+4 y = \left \{\begin {array}{cc} 0 & 0\le x <\pi \\ -\sin \left (3 x \right ) & \pi \le x \end {array}\right . \]

i.c.

second_order_laplace

[[_2nd_order, _linear, _nonhomogeneous]]

4.03








12811

\[ {}y^{\prime \prime }-4 y = \left \{\begin {array}{cc} x & 0\le x <1 \\ 1 & 1\le x \end {array}\right . \]

i.c.

second_order_laplace

[[_2nd_order, _linear, _nonhomogeneous]]

2.082








12812

\[ {}y^{\prime \prime }-4 y^{\prime }+5 y = \left \{\begin {array}{cc} x & 0\le x <1 \\ 1 & 1\le x \end {array}\right . \]

i.c.

second_order_laplace

[[_2nd_order, _linear, _nonhomogeneous]]

4.207








12813

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

i.c.

first_order_laplace

[[_linear, ‘class A‘]]

0.819








12814

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

i.c.

first_order_laplace

[[_linear, ‘class A‘]]

1.398








12815

\[ {}y^{\prime \prime }+9 y = \delta \left (x -\pi \right )+\delta \left (x -3 \pi \right ) \]

i.c.

second_order_laplace

[[_2nd_order, _linear, _nonhomogeneous]]

0.817








12816

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

i.c.

second_order_laplace

[[_2nd_order, _linear, _nonhomogeneous]]

0.796








12817

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

i.c.

second_order_laplace

[[_2nd_order, _linear, _nonhomogeneous]]

1.654








12818

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

i.c.

second_order_laplace

[[_2nd_order, _linear, _nonhomogeneous]]

0.614








12819

\[ {}y^{\prime \prime }+a^{2} y = \delta \left (x -\pi \right ) f \left (x \right ) \]

i.c.

second_order_laplace

[[_2nd_order, _linear, _nonhomogeneous]]

1.027








12820

\[ {}\left [\begin {array}{c} y_{1}^{\prime }=2 y_{1}-3 y_{2} \\ y_{2}^{\prime }=y_{1}-2 y_{2} \end {array}\right ] \]

system of linear ODEs

system of linear ODEs

0.328








12821

\[ {}\left [\begin {array}{c} y_{1}^{\prime }=y_{1}-2 y_{2} \\ y_{2}^{\prime }=y_{1}+3 y_{2} \end {array}\right ] \]

system of linear ODEs

system of linear ODEs

0.47








12822

\[ {}\left [\begin {array}{c} y_{1}^{\prime }=y_{1}+2 y_{2}+x -1 \\ y_{2}^{\prime }=3 y_{1}+2 y_{2}-5 x -2 \end {array}\right ] \]

i.c.

system of linear ODEs

system of linear ODEs

0.6








12823

\[ {}\left [\begin {array}{c} y_{1}^{\prime }=\frac {2 y_{1}}{x}-\frac {y_{2}}{x^{2}}-3+\frac {1}{x}-\frac {1}{x^{2}} \\ y_{2}^{\prime }=2 y_{1}+1-6 x \end {array}\right ] \]

i.c.

system of linear ODEs

system of linear ODEs

N/A

0.026








12824

\[ {}\left [\begin {array}{c} y_{1}^{\prime }=\frac {5 y_{1}}{x}+\frac {4 y_{2}}{x}-2 x \\ y_{2}^{\prime }=-\frac {6 y_{1}}{x}-\frac {5 y_{2}}{x}+5 x \end {array}\right ] \]

i.c.

system of linear ODEs

system of linear ODEs

N/A

0.029








12825

\[ {}\left [\begin {array}{c} y_{1}^{\prime }=3 y_{1}-2 y_{2} \\ y_{2}^{\prime }=-y_{1}+y_{2} \end {array}\right ] \]

i.c.

system of linear ODEs

system of linear ODEs

0.642








12826

\[ {}\left [\begin {array}{c} y_{1}^{\prime }=\sin \left (x \right ) y_{1}+\sqrt {x}\, y_{2}+\ln \left (x \right ) \\ y_{2}^{\prime }=\tan \left (x \right ) y_{1}-{\mathrm e}^{x} y_{2}+1 \end {array}\right ] \]

i.c.

system of linear ODEs

system of linear ODEs

N/A

0.028








12827

\[ {}\left [\begin {array}{c} y_{1}^{\prime }=\sin \left (x \right ) y_{1}+\sqrt {x}\, y_{2}+\ln \left (x \right ) \\ y_{2}^{\prime }=\tan \left (x \right ) y_{1}-{\mathrm e}^{x} y_{2}+1 \end {array}\right ] \]

i.c.

system of linear ODEs

system of linear ODEs

N/A

0.026








12828

\[ {}\left [\begin {array}{c} y_{1}^{\prime }={\mathrm e}^{-x} y_{1}-\sqrt {1+x}\, y_{2}+x^{2} \\ y_{2}^{\prime }=\frac {y_{1}}{\left (-2+x \right )^{2}} \end {array}\right ] \]

i.c.

system of linear ODEs

system of linear ODEs

N/A

0.027








12829

\[ {}\left [\begin {array}{c} y_{1}^{\prime }={\mathrm e}^{-x} y_{1}-\sqrt {1+x}\, y_{2}+x^{2} \\ y_{2}^{\prime }=\frac {y_{1}}{\left (-2+x \right )^{2}} \end {array}\right ] \]

i.c.

system of linear ODEs

system of linear ODEs

N/A

0.03








12830

\(\left [\begin {array}{cc} -2 & -4 \\ 1 & 3 \end {array}\right ]\)

Eigenvectors

N/A

N/A

0.125








12831

\(\left [\begin {array}{cc} -3 & -1 \\ 2 & -1 \end {array}\right ]\)

Eigenvectors

N/A

N/A

0.175








12832

\(\left [\begin {array}{ccc} 1 & 0 & 1 \\ 0 & 1 & -1 \\ -2 & 0 & -1 \end {array}\right ]\)

Eigenvectors

N/A

N/A

0.257








12833

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

Eigenvectors

N/A

N/A

0.166








12834

\(\left [\begin {array}{ccc} 7 & -1 & 6 \\ -10 & 4 & -12 \\ -2 & 1 & -1 \end {array}\right ]\)

Eigenvectors

N/A

N/A

0.223








12835

\(\left [\begin {array}{cccc} 1 & 1 & 1 & 1 \\ 1 & 1 & 1 & 1 \\ 1 & 1 & 1 & 1 \\ 1 & 1 & 1 & 1 \end {array}\right ]\)

Eigenvectors

N/A

N/A

0.199








12836

\(\left [\begin {array}{cccc} 1 & 3 & 5 & 7 \\ 2 & 6 & 10 & 14 \\ 3 & 9 & 15 & 21 \\ 6 & 18 & 30 & 42 \end {array}\right ]\)

Eigenvectors

N/A

N/A

0.243








12837

\(\left [\begin {array}{ccccc} 1 & 3 & 5 & 2 & 4 \\ 5 & 2 & 4 & 1 & 3 \\ 4 & 1 & 3 & 5 & 2 \\ 3 & 5 & 2 & 4 & 1 \\ 2 & 4 & 1 & 3 & 5 \end {array}\right ]\)

Eigenvectors

N/A

N/A

6.331








12838

\[ {}\left [\begin {array}{c} y_{1}^{\prime }=2 y_{1}-3 y_{2}+5 \,{\mathrm e}^{x} \\ y_{2}^{\prime }=y_{1}+4 y_{2}-2 \,{\mathrm e}^{-x} \end {array}\right ] \]

system of linear ODEs

system of linear ODEs

2.425








12839

\[ {}\left [\begin {array}{c} y_{1}^{\prime }=y_{2}-2 y_{1}+\sin \left (2 x \right ) \\ y_{2}^{\prime }=-3 y_{1}+y_{2}-2 \cos \left (3 x \right ) \end {array}\right ] \]

system of linear ODEs

system of linear ODEs

6.501








12840

\[ {}\left [\begin {array}{c} y_{1}^{\prime }=2 y_{2} \\ y_{2}^{\prime }=3 y_{1} \\ y_{3}^{\prime }=2 y_{3}-y_{1} \end {array}\right ] \]

system of linear ODEs

system of linear ODEs

0.733








12841

\[ {}\left [\begin {array}{c} y_{1}^{\prime }=2 x y_{1}-x^{2} y_{2}+4 x \\ y_{2}^{\prime }={\mathrm e}^{x} y_{1}+3 \,{\mathrm e}^{-x} y_{2}-\cos \left (3 x \right ) \end {array}\right ] \]

system of linear ODEs

system of linear ODEs

N/A

0.03








12842

\[ {}\left [\begin {array}{c} y_{1}^{\prime }=2 y_{1}-3 y_{2} \\ y_{2}^{\prime }=y_{1}-2 y_{2} \end {array}\right ] \]

system of linear ODEs

system of linear ODEs

0.307








12843

\[ {}\left [\begin {array}{c} y_{1}^{\prime }=2 y_{1}-3 y_{2}+4 x -2 \\ y_{2}^{\prime }=y_{1}-2 y_{2}+3 x \end {array}\right ] \]

system of linear ODEs

system of linear ODEs

0.758








12844

\[ {}\left [\begin {array}{c} y_{1}^{\prime }=\frac {5 y_{1}}{x}+\frac {4 y_{2}}{x} \\ y_{2}^{\prime }=-\frac {6 y_{1}}{x}-\frac {5 y_{2}}{x} \end {array}\right ] \]

system of linear ODEs

system of linear ODEs

N/A

0.025








12845

\[ {}\left [\begin {array}{c} y_{1}^{\prime }=\frac {5 y_{1}}{x}+\frac {4 y_{2}}{x}-2 x \\ y_{2}^{\prime }=-\frac {6 y_{1}}{x}-\frac {5 y_{2}}{x}+5 x \end {array}\right ] \]

system of linear ODEs

system of linear ODEs

N/A

0.026








12846

\[ {}\left [\begin {array}{c} y_{1}^{\prime }=2 y_{1}+y_{2}-2 y_{3} \\ y_{2}^{\prime }=3 y_{2}-2 y_{3} \\ y_{3}^{\prime }=3 y_{1}+y_{2}-3 y_{3} \end {array}\right ] \]

system of linear ODEs

system of linear ODEs

0.497








12847

\[ {}\left [\begin {array}{c} y_{1}^{\prime }=5 y_{1}-5 y_{2}-5 y_{3} \\ y_{2}^{\prime }=-y_{1}+4 y_{2}+2 y_{3} \\ y_{3}^{\prime }=3 y_{1}-5 y_{2}-3 y_{3} \end {array}\right ] \]

system of linear ODEs

system of linear ODEs

0.776








12848

\[ {}\left [\begin {array}{c} y_{1}^{\prime }=4 y_{1}+6 y_{2}+6 y_{3} \\ y_{2}^{\prime }=y_{1}+3 y_{2}+2 y_{3} \\ y_{3}^{\prime }=-y_{1}-4 y_{2}-3 y_{3} \end {array}\right ] \]

system of linear ODEs

system of linear ODEs

0.554








12849

\[ {}\left [\begin {array}{c} y_{1}^{\prime }=y_{1}+2 y_{2}-3 y_{3} \\ y_{2}^{\prime }=-3 y_{1}+4 y_{2}-2 y_{3} \\ y_{3}^{\prime }=2 y_{1}+y_{3} \end {array}\right ] \]

system of linear ODEs

system of linear ODEs

0.921








12850

\[ {}\left [\begin {array}{c} y_{1}^{\prime }=-2 y_{1}-y_{2}+y_{3} \\ y_{2}^{\prime }=-y_{1}-2 y_{2}-y_{3} \\ y_{3}^{\prime }=y_{1}-y_{2}-2 y_{3} \end {array}\right ] \]

system of linear ODEs

system of linear ODEs

0.466








12851

\[ {}\left [\begin {array}{c} y_{1}^{\prime }=y_{1}+y_{2}+2 y_{3} \\ y_{2}^{\prime }=y_{1}+y_{2}+2 y_{3} \\ y_{3}^{\prime }=2 y_{1}+2 y_{2}+4 y_{3} \end {array}\right ] \]

system of linear ODEs

system of linear ODEs

0.419








12852

\[ {}\left [\begin {array}{c} y_{1}^{\prime }=2 y_{1}+y_{2} \\ y_{2}^{\prime }=-y_{1}+2 y_{2} \\ y_{3}^{\prime }=3 y_{3}-4 y_{4} \\ y_{4}^{\prime }=4 y_{3}+3 y_{4} \end {array}\right ] \]

system of linear ODEs

system of linear ODEs

0.944








12853

\[ {}\left [\begin {array}{c} y_{1}^{\prime }=y_{2} \\ y_{2}^{\prime }=-3 y_{1}+2 y_{3} \\ y_{3}^{\prime }=y_{4} \\ y_{4}^{\prime }=2 y_{1}-5 y_{3} \end {array}\right ] \]

system of linear ODEs

system of linear ODEs

4.61








12854

\[ {}\left [\begin {array}{c} y_{1}^{\prime }=3 y_{1}+2 y_{2} \\ y_{2}^{\prime }=-2 y_{1}+3 y_{2} \\ y_{3}^{\prime }=y_{3} \\ y_{4}^{\prime }=2 y_{4} \end {array}\right ] \]

system of linear ODEs

system of linear ODEs

0.71








12855

\[ {}\left [\begin {array}{c} y_{1}^{\prime }=y_{2}+y_{4} \\ y_{2}^{\prime }=y_{1}-y_{3} \\ y_{3}^{\prime }=y_{4} \\ y_{4}^{\prime }=y_{3} \end {array}\right ] \]

system of linear ODEs

system of linear ODEs

0.611








12856

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

system of linear ODEs

system of linear ODEs

0.319








12857

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

system of linear ODEs

system of linear ODEs

0.344








12858

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

system of linear ODEs

system of linear ODEs

0.873








12859

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

system of linear ODEs

system of linear ODEs

0.493








12860

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

system of linear ODEs

system of linear ODEs

0.454








12861

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

system of linear ODEs

system of linear ODEs

0.426








12862

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

system of linear ODEs

system of linear ODEs

0.754








12863

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

system of linear ODEs

system of linear ODEs

1.625








12864

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

exact, linear, separable, homogeneousTypeD2, homogeneousTypeMapleC, first_order_ode_lie_symmetry_lookup

[_separable]

1.167








12865

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

exact, riccati, separable, first_order_ode_lie_symmetry_lookup

[_separable]

0.587








12866

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

exact, linear, separable, homogeneousTypeD2, first_order_ode_lie_symmetry_lookup

[_separable]

0.699








12867

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

quadrature

[_quadrature]

0.259








12868

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

quadrature

[_quadrature]

0.244








12869

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

quadrature

[_quadrature]

0.154








12870

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

quadrature

[_quadrature]

0.223








12871

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

exact, riccati, separable, first_order_ode_lie_symmetry_lookup

[_separable]

0.711








12872

\[ {}y^{\prime } = \frac {t}{y} \]

exact, separable, differentialType, homogeneousTypeD2, first_order_ode_lie_symmetry_lookup

[_separable]

1.332








12873

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

exact, separable, first_order_ode_lie_symmetry_lookup

[_separable]

0.818








12874

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

exact, separable, first_order_ode_lie_symmetry_lookup

[_separable]

2.068








12875

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

quadrature

[_quadrature]

0.36








12876

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

exact, linear, separable, homogeneousTypeMapleC, first_order_ode_lie_symmetry_lookup

[_separable]

1.311








12877

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

quadrature

[_quadrature]

0.509








12878

\[ {}y^{\prime } = \frac {4 t}{1+3 y^{2}} \]

exact, separable, differentialType, first_order_ode_lie_symmetry_lookup

[_separable]

154.546








12879

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

exact, linear, separable, first_order_ode_lie_symmetry_lookup

[_separable]

0.914








12880

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

exact, separable, first_order_ode_lie_symmetry_lookup

[_separable]

0.904








12881

\[ {}y^{\prime } = \frac {{\mathrm e}^{t} y}{1+y^{2}} \]

exact, separable, first_order_ode_lie_symmetry_lookup

[_separable]

1.037








12882

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

quadrature

[_quadrature]

0.503








12883

\[ {}w^{\prime } = \frac {w}{t} \]

exact, linear, separable, homogeneousTypeD2, first_order_ode_lie_symmetry_lookup

[_separable]

0.747








12884

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

quadrature

[_quadrature]

0.297








12885

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

i.c.

exact, linear, separable, homogeneousTypeD2, first_order_ode_lie_symmetry_lookup

[_separable]

1.188








12886

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

i.c.

exact, linear, separable, homogeneousTypeD2, first_order_ode_lie_symmetry_lookup

[_separable]

0.984








12887

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

i.c.

quadrature

[_quadrature]

0.24








12888

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

i.c.

exact, separable, first_order_ode_lie_symmetry_lookup

[_separable]

1.401








12889

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

i.c.

quadrature

[_quadrature]

0.194








12890

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

i.c.

exact, separable, first_order_ode_lie_symmetry_lookup

[_separable]

3.08








12891

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

i.c.

quadrature

[_quadrature]

0.46








12892

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

i.c.

exact, riccati, separable, first_order_ode_lie_symmetry_lookup

[_separable]

0.93








12893

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

i.c.

exact, separable, first_order_ode_lie_symmetry_lookup

[_separable]

1.807








12894

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

i.c.

quadrature

[_quadrature]

0.778








12895

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

i.c.

exact, riccati, separable, first_order_ode_lie_symmetry_lookup

[_separable]

1.343








12896

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

i.c.

quadrature

[_quadrature]

0.266








12897

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

i.c.

exact, riccati, separable, first_order_ode_lie_symmetry_lookup

[_separable]

1.02








12898

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

i.c.

quadrature

[_quadrature]

0.503








12899

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

quadrature

[_quadrature]

0.134








12900

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

quadrature

[_quadrature]

0.157