2.2.190 Problems 18901 to 19000

Table 2.397: Main lookup table. Sorted sequentially by problem number.

#

ODE

CAS classification

Solved?

Maple

Mma

Sympy

time(sec)

18901

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }-2 y^{\prime }+4 y&=0\\ y \left (0\right )&=2\\ y^{\prime }\left (0\right )&=0\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _missing_x]]

0.357

18902

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+4 y^{\prime }+29 y&={\mathrm e}^{-2 t} \sin \left (5 t \right )\\ y \left (0\right )&=5\\ y^{\prime }\left (0\right )&=-2\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.478

18903

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+w^{2} y&=\cos \left (2 t \right )\\ y \left (0\right )&=1\\ y^{\prime }\left (0\right )&=0\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.546

18904

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }-2 y^{\prime }+2 y&=\cos \left (t \right )\\ y \left (0\right )&=1\\ y^{\prime }\left (0\right )&=0\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.481

18905

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }-2 y^{\prime }+2 y&={\mathrm e}^{-t}\\ y \left (0\right )&=0\\ y^{\prime }\left (0\right )&=1\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _with_linear_symmetries]]

0.401

18906

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+2 y^{\prime }+y&=18 \,{\mathrm e}^{-t}\\ y \left (0\right )&=7\\ y^{\prime }\left (0\right )&=-2\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _with_linear_symmetries]]

0.385

18907

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime \prime \prime }-4 y^{\prime \prime \prime }+6 y^{\prime \prime }-4 y^{\prime }+y&=0\\ y \left (0\right )&=0\\ y^{\prime }\left (0\right )&=1\\ y^{\prime \prime }\left (0\right )&=0\\ y^{\prime \prime \prime }\left (0\right )&=1\\ \end {array} \]

Using Laplace transform method.

[[_high_order, _missing_x]]

0.449

18908

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime \prime \prime }-y&=0\\ y \left (0\right )&=1\\ y^{\prime }\left (0\right )&=0\\ y^{\prime \prime }\left (0\right )&=1\\ y^{\prime \prime \prime }\left (0\right )&=0\\ \end {array} \]

Using Laplace transform method.

[[_high_order, _missing_x]]

0.319

18909

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime \prime \prime }-9 y&=0\\ y \left (0\right )&=1\\ y^{\prime }\left (0\right )&=0\\ y^{\prime \prime }\left (0\right )&=-3\\ y^{\prime \prime \prime }\left (0\right )&=0\\ \end {array} \]

Using Laplace transform method.

[[_high_order, _missing_x]]

0.367

18910

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y_{1}^{\prime }&=-5 y_{1}+y_{2}\\ y_{2}^{\prime }&=-9 y_{1}+5 y_{2}\\ \end {array} \]

system_of_ODEs

0.444

18911

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y_{1}^{\prime }&=5 y_{1}-2 y_{2}\\ y_{2}^{\prime }&=6 y_{1}-2 y_{2}\\ \end {array} \]

system_of_ODEs

0.424

18912

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y_{1}^{\prime }&=4 y_{1}-4 y_{2}\\ y_{2}^{\prime }&=5 y_{1}-4 y_{2}\\ \end {array} \]

system_of_ODEs

0.454

18913

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y_{1}^{\prime }&=6 y_{2}\\ y_{2}^{\prime }&=-6 y_{1}\\ \end {array} \]

system_of_ODEs

0.434

18914

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y_{1}^{\prime }&=-4 y_{1}-y_{2}\\ y_{2}^{\prime }&=y_{1}-2 y_{2}\\ \end {array} \]

system_of_ODEs

0.411

18915

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y_{1}^{\prime }&=2 y_{1}-64 y_{2}\\ y_{2}^{\prime }&=y_{1}-14 y_{2}\\ \end {array} \]

system_of_ODEs

0.424

18916

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y_{1}^{\prime }&=-4 y_{1}-y_{2}+2 \,{\mathrm e}^{t}\\ y_{2}^{\prime }&=y_{1}-2 y_{2}+\sin \left (2 t \right )\\ \end {array} \]

system_of_ODEs

0.497

18917

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y_{1}^{\prime }&=5 y_{1}-y_{2}+{\mathrm e}^{-t}\\ y_{2}^{\prime }&=y_{1}+3 y_{2}+2 \,{\mathrm e}^{t}\\ \end {array} \]

system_of_ODEs

0.510

18918

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y_{1}^{\prime }&=-y_{1}-5 y_{2}+3\\ y_{2}^{\prime }&=y_{1}+3 y_{2}+5 \cos \left (t \right )\\ \end {array} \]

system_of_ODEs

0.516

18919

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y_{1}^{\prime }&=-2 y_{1}+y_{2}\\ y_{2}^{\prime }&=y_{1}-2 y_{2}+\sin \left (t \right )\\ \end {array} \]

system_of_ODEs

0.491

18920

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y_{1}^{\prime }&=y_{2}-y_{3}\\ y_{2}^{\prime }&=y_{1}+y_{3}-{\mathrm e}^{-t}\\ y_{3}^{\prime }&=y_{1}+y_{2}+{\mathrm e}^{t}\\ \end {array} \]

system_of_ODEs

0.666

18921

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+y&=\left \{\begin {array}{cc} 1 & 0\le t <\frac {\pi }{2} \\ 0 & \frac {\pi }{2}\le t \end {array}\right .\\ y \left (0\right )&=5\\ y^{\prime }\left (0\right )&=3\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

1.112

18922

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+2 y^{\prime }+2 y&=\left \{\begin {array}{cc} 0 & 0\le t <\pi \\ 1 & \pi \le t \le 2 \pi \\ 0 & t \le 2 \pi \end {array}\right .\\ y \left (0\right )&=5\\ y^{\prime }\left (0\right )&=4\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.983

18923

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+4 y&=\sin \left (t \right )-\operatorname {Heaviside}\left (t -2 \pi \right ) \sin \left (t \right )\\ y \left (0\right )&=0\\ y^{\prime }\left (0\right )&=0\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.447

18924

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+4 y&=\sin \left (t \right )-\sin \left (t \right ) \operatorname {Heaviside}\left (t -\pi \right )\\ y \left (0\right )&=0\\ y^{\prime }\left (0\right )&=0\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

6.304

18925

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+3 y^{\prime }+2 y&=\left \{\begin {array}{cc} 1 & 0\le t <10 \\ 0 & 10\le t \end {array}\right .\\ y \left (0\right )&=0\\ y^{\prime }\left (0\right )&=0\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.956

18926

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+3 y^{\prime }+2 y&=\operatorname {Heaviside}\left (-2+t \right )\\ y \left (0\right )&=6\\ y^{\prime }\left (0\right )&=6\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.495

18927

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+y&=\operatorname {Heaviside}\left (t -3 \pi \right )\\ y \left (0\right )&=1\\ y^{\prime }\left (0\right )&=0\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.550

18928

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+y^{\prime }+\frac {5 y}{4}&=t -\operatorname {Heaviside}\left (t -\frac {\pi }{2}\right ) \left (t -\frac {\pi }{2}\right )\\ y \left (0\right )&=0\\ y^{\prime }\left (0\right )&=0\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.764

18929

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+y&=\left \{\begin {array}{cc} \frac {t}{2} & 0\le t <6 \\ 3 & 6\le t \end {array}\right .\\ y \left (0\right )&=6\\ y^{\prime }\left (0\right )&=8\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

1.352

18930

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+y^{\prime }+\frac {5 y}{4}&=\left \{\begin {array}{cc} \sin \left (t \right ) & 0\le t <\pi \\ 0 & \pi \le t \end {array}\right .\\ y \left (0\right )&=0\\ y^{\prime }\left (0\right )&=0\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

1.907

18931

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+4 y&=\operatorname {Heaviside}\left (t -\pi \right )-\operatorname {Heaviside}\left (t -3 \pi \right )\\ y \left (0\right )&=3\\ y^{\prime }\left (0\right )&=7\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

1.711

18932

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime \prime \prime }-y&=\operatorname {Heaviside}\left (t -1\right )-\operatorname {Heaviside}\left (-2+t \right )\\ y \left (0\right )&=12\\ y^{\prime }\left (0\right )&=7\\ y^{\prime \prime }\left (0\right )&=2\\ y^{\prime \prime \prime }\left (0\right )&=-9\\ \end {array} \]

Using Laplace transform method.

[[_high_order, _linear, _nonhomogeneous]]

1.816

18933

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime \prime \prime }+5 y^{\prime \prime }+4 y&=1-\operatorname {Heaviside}\left (t -\pi \right )\\ y \left (0\right )&=0\\ y^{\prime }\left (0\right )&=0\\ y^{\prime \prime }\left (0\right )&=0\\ y^{\prime \prime \prime }\left (0\right )&=0\\ \end {array} \]

Using Laplace transform method.

[[_high_order, _linear, _nonhomogeneous]]

0.713

18934

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} u^{\prime \prime }+\frac {u^{\prime }}{4}+u&=\frac {\left (\left \{\begin {array}{cc} 1 & \frac {3}{2}\le t <\frac {5}{2} \\ 0 & \operatorname {otherwise} \end {array}\right .\right )}{2}\\ u \left (0\right )&=0\\ u^{\prime }\left (0\right )&=0\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

10.348

18935

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} u^{\prime \prime }+\frac {u^{\prime }}{4}+u&=\left \{\begin {array}{cc} 1 & \frac {3}{2}\le t <\frac {5}{2} \\ 0 & \operatorname {otherwise} \end {array}\right .\\ u \left (0\right )&=0\\ u^{\prime }\left (0\right )&=0\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.541

18936

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} u^{\prime \prime }+\frac {u^{\prime }}{4}+u&=2 \left (\left \{\begin {array}{cc} 1 & \frac {3}{2}\le t <\frac {5}{2} \\ 0 & \operatorname {otherwise} \end {array}\right .\right )\\ u \left (0\right )&=0\\ u^{\prime }\left (0\right )&=0\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.593

18937

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+2 y^{\prime }+2 y&=\delta \left (t -\pi \right )\\ y \left (0\right )&=0\\ y^{\prime }\left (0\right )&=1\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.474

18938

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+4 y&=\delta \left (t -\pi \right )-\delta \left (t -2 \pi \right )\\ y \left (0\right )&=0\\ y^{\prime }\left (0\right )&=0\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.440

18939

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+3 y^{\prime }+2 y&=\delta \left (t -\pi \right )+\operatorname {Heaviside}\left (t -10\right )\\ y \left (0\right )&=0\\ y^{\prime }\left (0\right )&={\frac {1}{2}}\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.618

18940

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }-y&=-20 \delta \left (t -3\right )\\ y \left (0\right )&=4\\ y^{\prime }\left (0\right )&=3\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.624

18941

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+2 y^{\prime }+3 y&=\sin \left (t \right )+\delta \left (t -3 \pi \right )\\ y \left (0\right )&=0\\ y^{\prime }\left (0\right )&=0\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

2.283

18942

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+4 y&=\delta \left (t -4 \pi \right )\\ y \left (0\right )&={\frac {1}{2}}\\ y^{\prime }\left (0\right )&=0\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.482

18943

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+y&=\delta \left (t -2 \pi \right ) \cos \left (t \right )\\ y \left (0\right )&=0\\ y^{\prime }\left (0\right )&=1\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.421

18944

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+4 y&=2 \delta \left (t -\frac {\pi }{4}\right )\\ y \left (0\right )&=0\\ y^{\prime }\left (0\right )&=0\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.514

18945

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+y&=\operatorname {Heaviside}\left (t -\frac {\pi }{2}\right )+3 \delta \left (t -\frac {3 \pi }{2}\right )-\operatorname {Heaviside}\left (t -2 \pi \right )\\ y \left (0\right )&=0\\ y^{\prime }\left (0\right )&=0\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.772

18946

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} 2 y^{\prime \prime }+y^{\prime }+6 y&=\delta \left (t -\frac {\pi }{6}\right ) \sin \left (t \right )\\ y \left (0\right )&=0\\ y^{\prime }\left (0\right )&=0\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

6.838

18947

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+2 y^{\prime }+2 y&=\cos \left (t \right )+\delta \left (t -\frac {\pi }{2}\right )\\ y \left (0\right )&=0\\ y^{\prime }\left (0\right )&=0\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

1.060

18948

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime \prime \prime }-y&=\delta \left (t -1\right )\\ y \left (0\right )&=0\\ y^{\prime }\left (0\right )&=0\\ y^{\prime \prime }\left (0\right )&=0\\ y^{\prime \prime \prime }\left (0\right )&=0\\ \end {array} \]

Using Laplace transform method.

[[_high_order, _linear, _nonhomogeneous]]

0.717

18949

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+\frac {y^{\prime }}{2}+y&=\delta \left (t -1\right )\\ y \left (0\right )&=0\\ y^{\prime }\left (0\right )&=0\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

1.073

18950

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+\frac {y^{\prime }}{4}+y&=\delta \left (t -1\right )\\ y \left (0\right )&=0\\ y^{\prime }\left (0\right )&=0\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

1.024

18951

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+y&=\delta \left (t -1\right )\\ y \left (0\right )&=0\\ y^{\prime }\left (0\right )&=0\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.391

18952

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+\frac {y^{\prime }}{5}+y&=k \delta \left (t -1\right )\\ y \left (0\right )&=0\\ y^{\prime }\left (0\right )&=0\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

1.018

18953

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+\frac {y^{\prime }}{10}+y&=k \delta \left (t -1\right )\\ y \left (0\right )&=0\\ y^{\prime }\left (0\right )&=0\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.981

18954

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+w^{2} y&=g \left (t \right )\\ y \left (0\right )&=0\\ y^{\prime }\left (0\right )&=1\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

2.109

18955

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+6 y^{\prime }+25 y&=\sin \left (\alpha t \right )\\ y \left (0\right )&=0\\ y^{\prime }\left (0\right )&=0\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.635

18956

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} 4 y^{\prime \prime }+4 y^{\prime }+17 y&=g \left (t \right )\\ y \left (0\right )&=0\\ y^{\prime }\left (0\right )&=0\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

2.800

18957

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+y^{\prime }+\frac {5 y}{4}&=1-\operatorname {Heaviside}\left (t -\pi \right )\\ y \left (0\right )&=1\\ y^{\prime }\left (0\right )&=-1\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.567

18958

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+4 y^{\prime }+4 y&=g \left (t \right )\\ y \left (0\right )&=2\\ y^{\prime }\left (0\right )&=-3\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

1.383

18959

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+3 y^{\prime }+2 y&=\cos \left (\alpha t \right )\\ y \left (0\right )&=1\\ y^{\prime }\left (0\right )&=0\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.454

18960

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime \prime \prime }-16 y&=g \left (t \right )\\ y \left (0\right )&=0\\ y^{\prime }\left (0\right )&=0\\ y^{\prime \prime }\left (0\right )&=0\\ y^{\prime \prime \prime }\left (0\right )&=0\\ \end {array} \]

Using Laplace transform method.

[[_high_order, _linear, _nonhomogeneous]]

9.033

18961

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime \prime \prime }+y^{\prime \prime }+16 y&=g \left (t \right )\\ y \left (0\right )&=2\\ y^{\prime }\left (0\right )&=0\\ y^{\prime \prime }\left (0\right )&=0\\ y^{\prime \prime \prime }\left (0\right )&=0\\ \end {array} \]

Using Laplace transform method.

[[_high_order, _linear, _nonhomogeneous]]

1.487

18962

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} \frac {7 y^{\prime \prime }}{5}+y&=\operatorname {Heaviside}\left (t \right )\\ y \left (0\right )&=0\\ y^{\prime }\left (0\right )&=0\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.451

18963

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} \frac {8 y^{\prime \prime }}{5}+y&=\operatorname {Heaviside}\left (t \right )\\ y \left (0\right )&=0\\ y^{\prime }\left (0\right )&=0\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.404

18964

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x_{1}^{\prime }&=x_{1}+x_{2}+x_{3}\\ x_{2}^{\prime }&=2 x_{1}+x_{2}-x_{3}\\ x_{3}^{\prime }&=-x_{2}+x_{3}\\ \end {array} \]

system_of_ODEs

1.090

18965

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x_{1}^{\prime }&=x_{1}-x_{2}+4 x_{3}\\ x_{2}^{\prime }&=3 x_{1}+2 x_{2}-x_{3}\\ x_{3}^{\prime }&=2 x_{1}+x_{2}-x_{3}\\ \end {array} \]

system_of_ODEs

1.148

18966

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime \prime \prime }+6 y^{\prime \prime \prime }+3 y&=t \end {array} \]

[[_high_order, _with_linear_symmetries]]

0.226

18967

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} t y^{\prime \prime \prime }+\sin \left (t \right ) y^{\prime \prime }+8 y&=\cos \left (t \right ) \end {array} \]

[[_3rd_order, _linear, _nonhomogeneous]]

0.136

18968

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} t \left (t -1\right ) y^{\prime \prime \prime \prime }+{\mathrm e}^{t} y^{\prime \prime }+4 t^{2} y&=0 \end {array} \]

[[_high_order, _with_linear_symmetries]]

0.148

18969

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime \prime }+t y^{\prime \prime }+t^{2} y^{\prime }+t^{2} y&=\ln \left (t \right ) \end {array} \]

[[_3rd_order, _linear, _nonhomogeneous]]

0.149

18970

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} \left (x -4\right ) y^{\prime \prime \prime \prime }+\left (x +1\right ) y^{\prime \prime }+\tan \left (x \right ) y&=0 \end {array} \]

[[_high_order, _with_linear_symmetries]]

0.158

18971

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} \left (x^{2}-2\right ) y^{\left (6\right )}+x^{2} y^{\prime \prime }+3 y&=0 \end {array} \]

[[_high_order, _with_linear_symmetries]]

0.211

18972

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime \prime \prime }+5 y^{\prime \prime \prime }+4 y&=0 \end {array} \]

[[_high_order, _missing_x]]

0.153

18973

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} t y^{\prime \prime \prime }+\sin \left (t \right ) y^{\prime \prime }+4 y&=\cos \left (t \right ) \end {array} \]

[[_3rd_order, _linear, _nonhomogeneous]]

0.119

18974

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} t \left (t -1\right ) y^{\prime \prime \prime \prime }+{\mathrm e}^{t} y^{\prime \prime }+7 t^{2} y&=0 \end {array} \]

[[_high_order, _with_linear_symmetries]]

0.179

18975

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime \prime }+t y^{\prime \prime }+5 t^{2} y^{\prime }+2 t^{3} y&=\ln \left (t \right ) \end {array} \]

[[_3rd_order, _linear, _nonhomogeneous]]

0.144

18976

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} \left (-1+x \right ) y^{\prime \prime \prime \prime }+\left (x +5\right ) y^{\prime \prime }+\tan \left (x \right ) y&=0 \end {array} \]

[[_high_order, _with_linear_symmetries]]

0.141

18977

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} \left (x^{2}-25\right ) y^{\left (6\right )}+x^{2} y^{\prime \prime }+5 y&=0 \end {array} \]

[[_high_order, _with_linear_symmetries]]

0.192

18978

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x_{1}^{\prime }&=x_{2}+x_{3}\\ x_{2}^{\prime }&=x_{1}+x_{3}\\ x_{3}^{\prime }&=x_{1}+x_{2}\\ \end {array} \]

system_of_ODEs

0.776

18979

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x_{1}^{\prime }&=3 x_{1}+2 x_{2}+4 x_{3}\\ x_{2}^{\prime }&=2 x_{1}+2 x_{3}\\ x_{3}^{\prime }&=4 x_{1}+2 x_{2}+3 x_{3}\\ \end {array} \]

system_of_ODEs

0.910

18980

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime \prime }+y^{\prime }&=0 \end {array} \]

[[_3rd_order, _missing_x]]

0.053

18981

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime \prime \prime }+y^{\prime \prime }&=0 \end {array} \]

[[_high_order, _missing_x]]

0.053

18982

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime \prime }+4 y^{\prime \prime }-4 y^{\prime }-16 y&=0 \end {array} \]

[[_3rd_order, _missing_x]]

0.072

18983

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime \prime \prime }+6 y^{\prime \prime \prime }+9 y^{\prime \prime }&=0 \end {array} \]

[[_high_order, _missing_x]]

0.076

18984

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x y^{\prime \prime \prime }-y^{\prime \prime }&=0 \end {array} \]

[[_3rd_order, _missing_y]]

0.366

18985

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{3} y^{\prime \prime \prime }+x^{2} y^{\prime \prime }-2 y^{\prime } x +2 y&=0 \end {array} \]

[[_3rd_order, _exact, _linear, _homogeneous]]

0.215

18986

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x_{1}^{\prime }&=-4 x_{1}+x_{2}\\ x_{2}^{\prime }&=x_{1}-5 x_{2}+x_{3}\\ x_{3}^{\prime }&=x_{2}-4 x_{3}\\ \end {array} \]

system_of_ODEs

1.044

18987

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x_{1}^{\prime }&=x_{1}+4 x_{2}+4 x_{3}\\ x_{2}^{\prime }&=3 x_{2}+2 x_{3}\\ x_{3}^{\prime }&=2 x_{2}+3 x_{3}\\ \end {array} \]

system_of_ODEs

6.577

18988

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x_{1}^{\prime }&=2 x_{1}-4 x_{2}+2 x_{3}\\ x_{2}^{\prime }&=-4 x_{1}+2 x_{2}-2 x_{3}\\ x_{3}^{\prime }&=2 x_{1}-2 x_{2}-x_{3}\\ \end {array} \]

system_of_ODEs

0.902

18989

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x_{1}^{\prime }&=-2 x_{1}+2 x_{2}-x_{3}\\ x_{2}^{\prime }&=-2 x_{1}+3 x_{2}-2 x_{3}\\ x_{3}^{\prime }&=-2 x_{1}+4 x_{2}-3 x_{3}\\ \end {array} \]

system_of_ODEs

0.914

18990

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x_{1}^{\prime }&=x_{1}+x_{2}+6 x_{3}\\ x_{2}^{\prime }&=x_{1}+6 x_{2}+x_{3}\\ x_{3}^{\prime }&=6 x_{1}+x_{2}+x_{3}\\ \end {array} \]

system_of_ODEs

0.977

18991

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x_{1}^{\prime }&=3 x_{1}+2 x_{2}+4 x_{3}\\ x_{2}^{\prime }&=2 x_{1}+2 x_{3}\\ x_{3}^{\prime }&=4 x_{1}+2 x_{2}+3 x_{3}\\ \end {array} \]

system_of_ODEs

0.844

18992

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x_{1}^{\prime }&=x_{1}+x_{2}+x_{3}\\ x_{2}^{\prime }&=2 x_{1}+x_{2}-x_{3}\\ x_{3}^{\prime }&=-8 x_{1}-5 x_{2}-3 x_{3}\\ \end {array} \]

system_of_ODEs

1.279

18993

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x_{1}^{\prime }&=x_{1}-x_{2}+4 x_{3}\\ x_{2}^{\prime }&=3 x_{1}+2 x_{2}-x_{3}\\ x_{3}^{\prime }&=2 x_{1}+x_{2}-x_{3}\\ \end {array} \]

system_of_ODEs

0.969

18994

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x_{1}^{\prime }&=x_{1}+x_{2}+2 x_{3}\\ x_{2}^{\prime }&=2 x_{2}+2 x_{3}\\ x_{3}^{\prime }&=-x_{1}+x_{2}+3 x_{3}\\ \end {array} \]

system_of_ODEs

6.744

18995

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x_{1}^{\prime }&=-x_{3}\\ x_{2}^{\prime }&=2 x_{1}\\ x_{3}^{\prime }&=-x_{1}+2 x_{2}+4 x_{3}\\ \end {array} \]

system_of_ODEs

1.053

18996

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x_{1}^{\prime }&=x_{1}+3 x_{3}\\ x_{2}^{\prime }&=-2 x_{2}\\ x_{3}^{\prime }&=3 x_{1}-x_{3}\\ \end {array} \]

system_of_ODEs

1.208

18997

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x_{1}^{\prime }&=\frac {x_{1}}{2}-x_{2}-\frac {3 x_{3}}{2}\\ x_{2}^{\prime }&=\frac {3 x_{1}}{2}-2 x_{2}-\frac {3 x_{3}}{2}\\ x_{3}^{\prime }&=-2 x_{1}+2 x_{2}+x_{3}\\ \end {array} \]

system_of_ODEs

1.017

18998

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x_{1}^{\prime }&=x_{1}+5 x_{2}+3 x_{3}-5 x_{4}\\ x_{2}^{\prime }&=2 x_{1}+3 x_{2}+2 x_{3}-4 x_{4}\\ x_{3}^{\prime }&=-x_{2}-2 x_{3}+x_{4}\\ x_{4}^{\prime }&=2 x_{1}+4 x_{2}+2 x_{3}-5 x_{4}\\ \end {array} \]

system_of_ODEs

1.543

18999

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x_{1}^{\prime }&=-5 x_{1}+x_{2}-4 x_{3}-x_{4}\\ x_{2}^{\prime }&=-3 x_{2}\\ x_{3}^{\prime }&=x_{1}-x_{2}+x_{4}\\ x_{4}^{\prime }&=2 x_{1}-x_{2}+2 x_{3}-2 x_{4}\\ \end {array} \]

system_of_ODEs

1.543

19000

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x_{1}^{\prime }&=2 x_{1}+2 x_{2}-x_{4}\\ x_{2}^{\prime }&=2 x_{1}-x_{2}+2 x_{4}\\ x_{3}^{\prime }&=3 x_{3}\\ x_{4}^{\prime }&=-x_{1}+2 x_{2}+2 x_{4}\\ \end {array} \]

system_of_ODEs

6.821