2.2.141 Problems 14001 to 14100

Table 2.283: Main lookup table. Sorted sequentially by problem number.

#

ODE

CAS classification

Solved?

time (sec)

14001

\[ {}10 Q^{\prime }+100 Q = \operatorname {Heaviside}\left (t -1\right )-\operatorname {Heaviside}\left (t -2\right ) \]
i.c.

[[_linear, ‘class A‘]]

0.713

14002

\[ {}y^{\prime \prime \prime }+y^{\prime \prime }+4 y^{\prime }+4 y = 8 \]
i.c.

[[_3rd_order, _missing_x]]

0.410

14003

\[ {}y^{\prime \prime \prime }-2 y^{\prime \prime }-y^{\prime }+2 y = 4 t \]
i.c.

[[_3rd_order, _with_linear_symmetries]]

0.348

14004

\[ {}y^{\prime \prime \prime }-y^{\prime \prime }+4 y^{\prime }-4 y = 8 \,{\mathrm e}^{2 t}-5 \,{\mathrm e}^{t} \]
i.c.

[[_3rd_order, _linear, _nonhomogeneous]]

0.422

14005

\[ {}y^{\prime \prime \prime }-5 y^{\prime \prime }+y^{\prime }-y = -t^{2}+2 t -10 \]
i.c.

[[_3rd_order, _with_linear_symmetries]]

2.092

14006

\[ {}y^{\prime \prime \prime \prime }-5 y^{\prime \prime }+4 y = 12 \operatorname {Heaviside}\left (t \right )-12 \operatorname {Heaviside}\left (t -1\right ) \]
i.c.

[[_high_order, _linear, _nonhomogeneous]]

19.786

14007

\[ {}y^{\prime \prime \prime \prime }-16 y = 32 \operatorname {Heaviside}\left (t \right )-32 \operatorname {Heaviside}\left (t -\pi \right ) \]
i.c.

[[_high_order, _linear, _nonhomogeneous]]

12.804

14008

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

[[_2nd_order, _exact, _linear, _nonhomogeneous]]

1.621

14009

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

[[_2nd_order, _linear, _nonhomogeneous]]

1.267

14010

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

[[_2nd_order, _linear, _nonhomogeneous]]

0.539

14011

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

[[_2nd_order, _linear, _nonhomogeneous]]

0.632

14012

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

[[_2nd_order, _linear, _nonhomogeneous]]

0.549

14013

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

[[_2nd_order, _missing_x]]

1.049

14014

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

[[_2nd_order, _with_linear_symmetries]]

8.881

14015

\[ {}y^{\prime \prime }-3 y^{\prime }-7 y = 4 \]

[[_2nd_order, _missing_x]]

1.655

14016

\[ {}y^{\prime \prime \prime }+3 y^{\prime \prime }+3 y^{\prime }+y = 5 \]

[[_3rd_order, _missing_x]]

0.092

14017

\[ {}3 y^{\prime \prime }+5 y^{\prime }-2 y = 3 t^{2} \]

[[_2nd_order, _with_linear_symmetries]]

1.391

14018

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

[[_3rd_order, _missing_y]]

0.128

14019

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

system_of_ODEs

0.462

14020

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

system_of_ODEs

0.619

14021

\[ {}\left [\begin {array}{c} x^{\prime }-x+2 y=0 \\ y^{\prime }+y-x=0 \end {array}\right ] \]

system_of_ODEs

0.508

14022

\[ {}\left [\begin {array}{c} x^{\prime }+5 x-2 y=0 \\ 2 x+y^{\prime }-y=0 \end {array}\right ] \]

system_of_ODEs

0.596

14023

\[ {}\left [\begin {array}{c} x^{\prime }-3 x+2 y=0 \\ y^{\prime }-x+3 y=0 \end {array}\right ] \]

system_of_ODEs

0.572

14024

\[ {}\left [\begin {array}{c} x^{\prime }+x-z=0 \\ x+y^{\prime }-y=0 \\ z^{\prime }+x+2 y-3 z=0 \end {array}\right ] \]

system_of_ODEs

0.391

14025

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

system_of_ODEs

0.975

14026

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

system_of_ODEs

0.515

14027

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

system_of_ODEs

0.447

14028

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

system_of_ODEs

0.488

14029

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

system_of_ODEs

0.438

14030

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

system_of_ODEs

0.461

14031

\[ {}\left [\begin {array}{c} x^{\prime }-4 y^{\prime }=0 \\ 2 x^{\prime }-3 y^{\prime }=y+t \end {array}\right ] \]

system_of_ODEs

0.395

14032

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

system_of_ODEs

0.730

14033

\[ {}\left [\begin {array}{c} x^{\prime }=-4 x+9 y+12 \,{\mathrm e}^{-t} \\ y^{\prime }=-5 x+2 y \end {array}\right ] \]

system_of_ODEs

0.753

14034

\[ {}\left [\begin {array}{c} x^{\prime }=-7 x+6 y+6 \,{\mathrm e}^{-t} \\ y^{\prime }=-12 x+5 y+37 \end {array}\right ] \]

system_of_ODEs

0.872

14035

\[ {}\left [\begin {array}{c} x^{\prime }=-7 x+10 y+18 \,{\mathrm e}^{t} \\ y^{\prime }=-10 x+9 y+37 \end {array}\right ] \]

system_of_ODEs

1.178

14036

\[ {}\left [\begin {array}{c} x^{\prime }=-14 x+39 y+78 \sinh \left (t \right ) \\ y^{\prime }=-6 x+16 y+6 \cosh \left (t \right ) \end {array}\right ] \]

system_of_ODEs

1.399

14037

\[ {}\left [\begin {array}{c} x^{\prime }=2 x+4 y-2 z-2 \sinh \left (t \right ) \\ y^{\prime }=4 x+2 y-2 z+10 \cosh \left (t \right ) \\ z^{\prime }=-x+3 y+z+5 \end {array}\right ] \]

system_of_ODEs

2.429

14038

\[ {}\left [\begin {array}{c} x^{\prime }=2 x+6 y-2 z+50 \,{\mathrm e}^{t} \\ y^{\prime }=6 x+2 y-2 z+21 \,{\mathrm e}^{-t} \\ z^{\prime }=-x+6 y+z+9 \end {array}\right ] \]

system_of_ODEs

1.008

14039

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

system_of_ODEs

0.718

14040

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

system_of_ODEs

0.834

14041

\[ {}\left [\begin {array}{c} x^{\prime }=7 x+y-1-6 \,{\mathrm e}^{t} \\ y^{\prime }=-4 x+3 y+4 \,{\mathrm e}^{t}-3 \end {array}\right ] \]
i.c.

system_of_ODEs

0.672

14042

\[ {}\left [\begin {array}{c} x^{\prime }=3 x-2 y+24 \sin \left (t \right ) \\ y^{\prime }=9 x-3 y+12 \cos \left (t \right ) \end {array}\right ] \]
i.c.

system_of_ODEs

1.107

14043

\[ {}\left [\begin {array}{c} x^{\prime }=7 x-4 y+10 \,{\mathrm e}^{t} \\ y^{\prime }=3 x+14 y+6 \,{\mathrm e}^{2 t} \end {array}\right ] \]
i.c.

system_of_ODEs

0.701

14044

\[ {}\left [\begin {array}{c} x^{\prime }=-7 x+4 y+6 \,{\mathrm e}^{3 t} \\ y^{\prime }=-5 x+2 y+6 \,{\mathrm e}^{2 t} \end {array}\right ] \]
i.c.

system_of_ODEs

0.706

14045

\[ {}\left [\begin {array}{c} x^{\prime }=-3 x-3 y+z \\ y^{\prime }=2 y+2 z+29 \,{\mathrm e}^{-t} \\ z^{\prime }=5 x+y+z+39 \,{\mathrm e}^{t} \end {array}\right ] \]
i.c.

system_of_ODEs

30.730

14046

\[ {}\left [\begin {array}{c} x^{\prime }=2 x+y-z+5 \sin \left (t \right ) \\ y^{\prime }=y+z-10 \cos \left (t \right ) \\ z^{\prime }=x+z+2 \end {array}\right ] \]
i.c.

system_of_ODEs

1.825

14047

\[ {}\left [\begin {array}{c} x^{\prime }=-3 x+3 y+z+5 \sin \left (2 t \right ) \\ y^{\prime }=x-5 y-3 z+5 \cos \left (2 t \right ) \\ z^{\prime }=-3 x+7 y+3 z+23 \,{\mathrm e}^{t} \end {array}\right ] \]
i.c.

system_of_ODEs

2.825

14048

\[ {}\left [\begin {array}{c} x^{\prime }=-3 x+y-3 z+2 \,{\mathrm e}^{t} \\ y^{\prime }=4 x-y+2 z+4 \,{\mathrm e}^{t} \\ z^{\prime }=4 x-2 y+3 z+4 \,{\mathrm e}^{t} \end {array}\right ] \]
i.c.

system_of_ODEs

1.773

14049

\[ {}\left [\begin {array}{c} x^{\prime }=x+5 y+10 \sinh \left (t \right ) \\ y^{\prime }=19 x-13 y+24 \sinh \left (t \right ) \end {array}\right ] \]

system_of_ODEs

1.666

14050

\[ {}\left [\begin {array}{c} x^{\prime }=9 x-3 y-6 t \\ y^{\prime }=-x+11 y+10 t \end {array}\right ] \]

system_of_ODEs

0.521

14051

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

[[_2nd_order, _with_linear_symmetries]]

0.108

14052

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

[_Lienard]

0.152

14053

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

[[_2nd_order, _linear, _nonhomogeneous]]

1.308

14054

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

[[_2nd_order, _linear, _nonhomogeneous]]

3.485

14055

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

[[_2nd_order, _linear, _nonhomogeneous]]

9.042

14056

\[ {}y^{\prime \prime }+y = f \left (x \right ) \]
i.c.

[[_2nd_order, _linear, _nonhomogeneous]]

0.726

14057

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

[[_2nd_order, _with_linear_symmetries]]

0.891

14058

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

[[_2nd_order, _with_linear_symmetries]]

0.683

14059

\[ {}x \left (1-x \right ) y^{\prime \prime }+\left (1-5 x \right ) y^{\prime }-4 y = 0 \]

[_Jacobi]

0.549

14060

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

[[_2nd_order, _with_linear_symmetries]]

0.456

14061

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

[[_2nd_order, _with_linear_symmetries]]

0.586

14062

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

[[_2nd_order, _with_linear_symmetries]]

0.792

14063

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

[[_Emden, _Fowler]]

0.101

14064

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

[[_2nd_order, _exact, _linear, _homogeneous]]

0.136

14065

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

[[_2nd_order, _with_linear_symmetries]]

0.694

14066

\[ {}x \left (-1+x \right ) y^{\prime \prime }+3 x y^{\prime }+y = 0 \]

[[_2nd_order, _exact, _linear, _homogeneous]]

1.293

14067

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

[[_Emden, _Fowler]]

0.804

14068

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

[[_Emden, _Fowler]]

0.597

14069

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

[[_Emden, _Fowler]]

0.443

14070

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

[[_2nd_order, _missing_x]]

1.694

14071

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

[[_2nd_order, _missing_x]]

1.617

14072

\[ {}y^{\prime \prime }+\beta y^{\prime }+\gamma y = 0 \]

[[_2nd_order, _missing_x]]

3.155

14073

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

[_Gegenbauer]

0.933

14074

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

[[_2nd_order, _linear, _nonhomogeneous]]

7.288

14075

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

[_linear]

2.456

14076

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

[[_1st_order, _with_linear_symmetries], _Clairaut]

0.422

14077

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

[[_homogeneous, ‘class A‘], _rational, _dAlembert]

1.904

14078

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

[_rational]

123.821

14079

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

[[_3rd_order, _missing_y]]

0.181

14080

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

[[_2nd_order, _with_linear_symmetries]]

0.686

14081

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

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

1.845

14082

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

[[_2nd_order, _missing_y]]

0.466

14083

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

[_separable]

1.660

14084

\[ {}\left (1+u \right ) v+\left (1-v\right ) u v^{\prime } = 0 \]

[_separable]

1.484

14085

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

[_separable]

2.052

14086

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

[_separable]

1.737

14087

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

[_separable]

0.888

14088

\[ {}z-\left (-a^{2}+t^{2}\right ) z^{\prime } = 0 \]

[_separable]

1.445

14089

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

[_separable]

2.284

14090

\[ {}1+s^{2}-\sqrt {t}\, s^{\prime } = 0 \]

[_separable]

1.980

14091

\[ {}r^{\prime }+r \tan \left (t \right ) = 0 \]

[_separable]

1.792

14092

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

[_separable]

22.960

14093

\[ {}\sqrt {-x^{2}+1}\, y^{\prime }-\sqrt {1-y^{2}} = 0 \]

[_separable]

25.861

14094

\[ {}3 \,{\mathrm e}^{x} \tan \left (y\right )+\left (1-{\mathrm e}^{x}\right ) \sec \left (y\right )^{2} y^{\prime } = 0 \]

[_separable]

3.485

14095

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

[_separable]

2.719

14096

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

[[_homogeneous, ‘class A‘], _exact, _rational, [_Abel, ‘2nd type‘, ‘class A‘]]

4.345

14097

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

[_linear]

2.813

14098

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

[[_homogeneous, ‘class A‘], _rational, [_Abel, ‘2nd type‘, ‘class A‘]]

39.467

14099

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

[[_homogeneous, ‘class A‘], _rational, _dAlembert]

8.257

14100

\[ {}8 y+10 x +\left (5 y+7 x \right ) y^{\prime } = 0 \]

[[_homogeneous, ‘class A‘], _rational, [_Abel, ‘2nd type‘, ‘class A‘]]

4.297