2.2.149 Problems 14801 to 14900

Table 2.315: Main lookup table. Sorted sequentially by problem number.

#

ODE

CAS classification

Solved?

Maple

Mma

Sympy

time(sec)

14801

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

Eigenvectors

N/A

N/A

N/A

0.669

14802

\(\left [\begin {array}{ccc} 1 & -1 & -1 \\ 1 & 3 & 1 \\ -3 & -6 & 6 \end {array}\right ]\)

Eigenvectors

N/A

N/A

N/A

0.728

14803

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

Eigenvectors

N/A

N/A

N/A

0.686

14804

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

Eigenvectors

N/A

N/A

N/A

3.972

14805

\(\left [\begin {array}{ccc} 1 & 3 & -6 \\ 0 & 2 & 2 \\ 0 & -1 & 5 \end {array}\right ]\)

Eigenvectors

N/A

N/A

N/A

0.675

14806

\(\left [\begin {array}{ccc} -5 & -12 & 6 \\ 1 & 5 & -1 \\ -7 & -10 & 8 \end {array}\right ]\)

Eigenvectors

N/A

N/A

N/A

0.748

14807

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

Eigenvectors

N/A

N/A

N/A

0.672

14808

\(\left [\begin {array}{ccc} -2 & 6 & -18 \\ 12 & -23 & 66 \\ 5 & -10 & 29 \end {array}\right ]\)

Eigenvectors

N/A

N/A

N/A

0.735

14809

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

system_of_ODEs

1.070

14810

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

system_of_ODEs

4.688

14811

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

Using Laplace transform method.

[[_linear, ‘class A‘]]

0.626

14812

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

Using Laplace transform method.

[[_linear, ‘class A‘]]

0.556

14813

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }-5 y^{\prime }+6 y&=0\\ y \left (0\right )&=1\\ y^{\prime }\left (0\right )&=2\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _missing_x]]

0.211

14814

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+y^{\prime }-12 y&=0\\ y \left (0\right )&=4\\ y^{\prime }\left (0\right )&=-1\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _missing_x]]

0.298

14815

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+4 y&=8\\ y \left (0\right )&=0\\ y^{\prime }\left (0\right )&=6\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _missing_x]]

0.382

14816

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

Using Laplace transform method.

[[_2nd_order, _missing_x]]

0.345

14817

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }-y^{\prime }-2 y&=18 \,{\mathrm e}^{-t} \sin \left (3 t \right )\\ y \left (0\right )&=0\\ y^{\prime }\left (0\right )&=3\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.492

14818

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

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.403

14819

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+7 y^{\prime }+10 y&=4 t \,{\mathrm e}^{-3 t}\\ y \left (0\right )&=0\\ y^{\prime }\left (0\right )&=-1\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.399

14820

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }-8 y^{\prime }+15 y&=9 \,{\mathrm e}^{2 t} t\\ y \left (0\right )&=5\\ y^{\prime }\left (0\right )&=10\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.432

14821

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime \prime }-5 y^{\prime \prime }+7 y^{\prime }-3 y&=20 \sin \left (t \right )\\ y \left (0\right )&=0\\ y^{\prime }\left (0\right )&=0\\ y^{\prime \prime }\left (0\right )&=-2\\ \end {array} \]

Using Laplace transform method.

[[_3rd_order, _linear, _nonhomogeneous]]

0.530

14822

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime \prime }-6 y^{\prime \prime }+11 y^{\prime }-6 y&=36 t \,{\mathrm e}^{4 t}\\ y \left (0\right )&=-1\\ y^{\prime }\left (0\right )&=0\\ y^{\prime \prime }\left (0\right )&=-6\\ \end {array} \]

Using Laplace transform method.

[[_3rd_order, _linear, _nonhomogeneous]]

0.432

14823

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

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

1.210

14824

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

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.679

14825

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

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

2.556

14826

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+6 y^{\prime }+8 y&=\left \{\begin {array}{cc} 3 & 0<t <2 \pi \\ 0 & 2 \pi <t \end {array}\right .\\ y \left (0\right )&=1\\ y^{\prime }\left (0\right )&=-1\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

1.007

14827

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+4 y&=\left \{\begin {array}{cc} -4 t +8 \pi & 0<t <2 \pi \\ 0 & 2<t \end {array}\right .\\ y \left (0\right )&=2\\ y^{\prime }\left (0\right )&=0\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.759

14828

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

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.745

14829

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} t x^{\prime \prime }-2 x^{\prime }+9 t^{5} x&=0 \end {array} \]

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

6.895

14830

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

[[_3rd_order, _with_linear_symmetries]]

0.216

14831

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

[[_2nd_order, _with_linear_symmetries]]

2.002

14832

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

[[_3rd_order, _with_linear_symmetries]]

0.115

14833

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

[[_Emden, _Fowler]]

5.839

14834

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

[[_2nd_order, _with_linear_symmetries]]

54.053

14835

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} t^{2} x^{\prime \prime }+\left (2 t^{3}+7 t \right ) x^{\prime }+\left (8 t^{2}+8\right ) x&=0 \end {array} \]

[[_2nd_order, _with_linear_symmetries]]

2.235

14836

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

[[_2nd_order, _with_linear_symmetries]]

1.199

14837

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

[[_Emden, _Fowler]]

0.374

14838

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

[[_2nd_order, _with_linear_symmetries]]

7.344

14839

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

[[_2nd_order, _with_linear_symmetries]]

1.340

14840

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

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

5.332

14841

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

[[_2nd_order, _with_linear_symmetries]]

82.876

14842

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

[_Lienard]

9.522

14843

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

[[_2nd_order, _with_linear_symmetries]]

3.154

14844

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

[[_2nd_order, _with_linear_symmetries]]

0.149

14845

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

[[_2nd_order, _missing_x]]

4.620

14846

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

[[_2nd_order, _missing_x]]

1.653

14847

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

[[_2nd_order, _missing_x]]

1.674

14848

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

[[_2nd_order, _missing_x]]

47.841

14849

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

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

2.279

14850

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

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

1.981

14851

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

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

6.050

14852

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} -\frac {6 y^{\prime } x}{\left (3 x^{2}+1\right )^{2}}+\frac {y^{\prime \prime }}{3 x^{2}+1}+\lambda \left (3 x^{2}+1\right ) y&=0\\ y \left (0\right )&=0\\ y \left (\pi \right )&=0\\ \end {array} \]

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

3.180

14853

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

system_of_ODEs

0.508

14854

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

system_of_ODEs

0.577

14855

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

system_of_ODEs

0.545

14856

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

system_of_ODEs

0.527

14857

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

system_of_ODEs

0.648

14858

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

system_of_ODEs

0.811

14859

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

system_of_ODEs

4.261

14860

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{\prime }&=x+7 y\\ y^{\prime }&=3 x+5 y\\ \end {array} \]

system_of_ODEs

0.650

14861

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

system_of_ODEs

0.576

14862

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{\prime }&=a x+b y\\ y^{\prime }&=c x+d y\\ \end {array} \]

system_of_ODEs

1.485

14863

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

system_of_ODEs

0.031

14864

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

system_of_ODEs

0.105

14865

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

[[_2nd_order, _missing_x]]

158.386

14866

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

[[_2nd_order, _missing_x]]

62.868

14867

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

[[_2nd_order, _missing_x]]

210.177

14868

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{\prime \prime }+\left (5 x^{4}-6 x^{2}\right ) x^{\prime }+x^{3}&=0 \end {array} \]

[[_2nd_order, _missing_x]]

56.100

14869

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

[[_2nd_order, _missing_x]]

36.279

14870

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

system_of_ODEs

0.032

14871

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

[_quadrature]

0.678

14872

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

[_quadrature]

0.972

14873

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

[_quadrature]

0.751

14874

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} z^{\prime }&={\mathrm e}^{-2 x} x \end {array} \]

[_quadrature]

0.660

14875

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

[_quadrature]

1.144

14876

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

[_quadrature]

5.736

14877

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

[_quadrature]

0.807

14878

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{\prime }&=2 \sin \left (t \right )^{2}\\ x \left (\frac {\pi }{4}\right )&=\frac {\pi }{4}\\ \end {array} \]

[_quadrature]

0.837

14879

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

[_quadrature]

0.897

14880

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{\prime } {\mathrm e}^{3 t}+3 x \,{\mathrm e}^{3 t}&={\mathrm e}^{-t}\\ x \left (0\right )&=3\\ \end {array} \]

[[_linear, ‘class A‘]]

93.054

14881

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

[_quadrature]

1.499

14882

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

[_quadrature]

6.693

14883

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

[_quadrature]

16.030

14884

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

[_quadrature]

11.964

14885

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

[_quadrature]

5.823

14886

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

[_separable]

4.753

14887

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

[_separable]

19.162

14888

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{\prime }&=t^{2} x \end {array} \]

[_separable]

9.127

14889

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

[_quadrature]

7.012

14890

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

[_separable]

20.772

14891

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{\prime }+p x&=q \end {array} \]

[_quadrature]

1.742

14892

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

[_separable]

9.670

14893

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} i^{\prime }&=p \left (t \right ) i \end {array} \]

[_separable]

5.085

14894

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

[_quadrature]

2.184

14895

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} m v^{\prime }&=-m g +k v^{2} \end {array} \]

[_quadrature]

7.186

14896

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

[_quadrature]

347.341

14897

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

[_quadrature]

381.379

14898

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

[_linear]

11.235

14899

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

[_separable]

9.053

14900

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

[_linear]

8.876