2.2.130 Problems 12901 to 13000

Table 2.261: Main lookup table. Sorted sequentially by problem number.

#

ODE

CAS classification

Solved?

time (sec)

12901

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

system_of_ODEs

0.531

12902

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

system_of_ODEs

0.631

12903

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

system_of_ODEs

0.463

12904

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

system_of_ODEs

0.516

12905

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

system_of_ODEs

0.284

12906

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

system_of_ODEs

0.314

12907

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

system_of_ODEs

0.339

12908

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

system_of_ODEs

0.283

12909

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

system_of_ODEs

0.365

12910

\[ {}\left [\begin {array}{c} x^{\prime }=-5 x+3 y \\ y^{\prime }=2 x-10 y \end {array}\right ] \]

system_of_ODEs

0.350

12911

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

system_of_ODEs

0.237

12912

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

system_of_ODEs

0.436

12913

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

system_of_ODEs

0.318

12914

\[ {}\left [\begin {array}{c} x^{\prime }=9 y \\ y^{\prime }=-x \end {array}\right ] \]

system_of_ODEs

0.375

12915

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

system_of_ODEs

0.422

12916

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

system_of_ODEs

0.319

12917

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

system_of_ODEs

0.637

12918

\[ {}\left [\begin {array}{c} x^{\prime }=-5 x+3 y+{\mathrm e}^{-t} \\ y^{\prime }=2 x-10 y \end {array}\right ] \]

system_of_ODEs

0.541

12919

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

system_of_ODEs

0.710

12920

\[ {}\left [\begin {array}{c} x^{\prime }=3 x+2 y+3 \\ y^{\prime }=7 x+5 y+2 t \end {array}\right ] \]

system_of_ODEs

0.934

12921

\[ {}\left [\begin {array}{c} x^{\prime }=x-3 y \\ y^{\prime }=3 x+7 y \end {array}\right ] \]

system_of_ODEs

0.308

12922

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

[[_linear, ‘class A‘]]

1.109

12923

\[ {}y^{\prime \prime }-7 y^{\prime }+12 y = 0 \]

[[_2nd_order, _missing_x]]

0.827

12924

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

[[_2nd_order, _with_linear_symmetries]]

1.168

12925

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

[[_2nd_order, _exact, _linear, _homogeneous]]

1.117

12926

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

[[_homogeneous, ‘class A‘], _exact, _rational, _Bernoulli]

4.052

12927

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

[[_homogeneous, ‘class G‘], _rational, _Bernoulli]

2.645

12928

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

[[_linear, ‘class A‘]]

1.550

12929

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

[_separable]

1.144

12930

\[ {}y^{\prime \prime }-2 y^{\prime }-8 y = 0 \]

[[_2nd_order, _missing_x]]

0.834

12931

\[ {}y^{\prime \prime \prime }-2 y^{\prime \prime }-4 y^{\prime }+8 y = 0 \]

[[_3rd_order, _missing_x]]

0.070

12932

\[ {}y^{\prime \prime \prime }-3 y^{\prime \prime }-4 y^{\prime }+12 y = 0 \]

[[_3rd_order, _missing_x]]

0.072

12933

\[ {}x^{3} y^{\prime \prime \prime }+2 x^{2} y^{\prime \prime }-10 x y^{\prime }-8 y = 0 \]

[[_3rd_order, _fully, _exact, _linear]]

0.128

12934

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

[[_linear, ‘class A‘]]

1.507

12935

\[ {}y^{\prime \prime }-4 y^{\prime }+4 y = -8 \sin \left (2 x \right ) \]

[[_2nd_order, _linear, _nonhomogeneous]]

1.358

12936

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

[_quadrature]

0.622

12937

\[ {}y^{\prime \prime }+y^{\prime }-6 y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

1.460

12938

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

[[_linear, ‘class A‘]]

1.811

12939

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

[[_linear, ‘class A‘]]

1.894

12940

\[ {}y^{\prime \prime }-y^{\prime }-12 y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

1.472

12941

\[ {}y^{\prime \prime }+y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

1.576

12942

\[ {}y^{\prime \prime }+y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

1.583

12943

\[ {}y^{\prime \prime }+y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

2.391

12944

\[ {}x^{3} y^{\prime \prime \prime }-3 x^{2} y^{\prime \prime }+6 x y^{\prime }-6 y = 0 \]
i.c.

[[_3rd_order, _with_linear_symmetries]]

0.216

12945

\[ {}y^{\prime } = x^{2} \sin \left (y\right ) \]
i.c.

[_separable]

3.565

12946

\[ {}y^{\prime } = \frac {y^{2}}{-2+x} \]
i.c.

[_separable]

2.224

12947

\[ {}y^{\prime } = y^{{1}/{3}} \]
i.c.

[_quadrature]

1.664

12948

\[ {}3 x +2 y+\left (2 x +y\right ) y^{\prime } = 0 \]

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

3.977

12949

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

[_exact, _rational, [_1st_order, ‘_with_symmetry_[F(x)*G(y),0]‘], [_Abel, ‘2nd type‘, ‘class B‘]]

1.445

12950

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

[_exact, _rational, [_1st_order, ‘_with_symmetry_[F(x),G(x)]‘], [_Abel, ‘2nd type‘, ‘class A‘]]

1.277

12951

\[ {}3 x^{2} y+2-\left (x^{3}+y\right ) y^{\prime } = 0 \]

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

1.230

12952

\[ {}6 x y+2 y^{2}-5+\left (3 x^{2}+4 x y-6\right ) y^{\prime } = 0 \]

[_exact, _rational, [_Abel, ‘2nd type‘, ‘class B‘]]

1.587

12953

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

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

10.253

12954

\[ {}\frac {x}{y^{2}}+x +\left (\frac {x^{2}}{y^{3}}+y\right ) y^{\prime } = 0 \]

[_rational, [_1st_order, ‘_with_symmetry_[F(x)*G(y),0]‘]]

2.352

12955

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

[_separable]

3.338

12956

\[ {}\frac {2 y^{{3}/{2}}+1}{\sqrt {x}}+\left (3 \sqrt {x}\, \sqrt {y}-1\right ) y^{\prime } = 0 \]

[_rational, [_1st_order, ‘_with_symmetry_[F(x)*G(y),0]‘]]

2.892

12957

\[ {}2 x y-3+\left (x^{2}+4 y\right ) y^{\prime } = 0 \]
i.c.

[_exact, _rational, [_1st_order, ‘_with_symmetry_[F(x),G(x)]‘], [_Abel, ‘2nd type‘, ‘class A‘]]

1.631

12958

\[ {}3 x^{2} y^{2}-y^{3}+2 x +\left (2 x^{3} y-3 x y^{2}+1\right ) y^{\prime } = 0 \]
i.c.

[_exact, _rational]

5.537

12959

\[ {}2 y \sin \left (x \right ) \cos \left (x \right )+y^{2} \sin \left (x \right )+\left (\sin \left (x \right )^{2}-2 y \cos \left (x \right )\right ) y^{\prime } = 0 \]
i.c.

[_exact, [_Abel, ‘2nd type‘, ‘class B‘]]

77.280

12960

\[ {}y \,{\mathrm e}^{x}+2 \,{\mathrm e}^{x}+y^{2}+\left ({\mathrm e}^{x}+2 x y\right ) y^{\prime } = 0 \]
i.c.

[_exact, [_Abel, ‘2nd type‘, ‘class B‘]]

3.225

12961

\[ {}\frac {3-y}{x^{2}}+\frac {\left (y^{2}-2 x \right ) y^{\prime }}{x y^{2}} = 0 \]
i.c.

[_exact, _rational, [_1st_order, ‘_with_symmetry_[F(x)*G(y),0]‘]]

3.288

12962

\[ {}\frac {1+8 x y^{{2}/{3}}}{x^{{2}/{3}} y^{{1}/{3}}}+\frac {\left (2 x^{{4}/{3}} y^{{2}/{3}}-x^{{1}/{3}}\right ) y^{\prime }}{y^{{4}/{3}}} = 0 \]
i.c.

[[_homogeneous, ‘class G‘], _exact, _rational]

4.467

12963

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

[[_homogeneous, ‘class G‘], _rational, _Bernoulli]

2.179

12964

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

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

2.228

12965

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

[[_1st_order, _with_linear_symmetries], _rational]

1.835

12966

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

[_separable]

1.371

12967

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

[_separable]

1.358

12968

\[ {}2 r \left (s^{2}+1\right )+\left (r^{4}+1\right ) s^{\prime } = 0 \]

[_separable]

2.273

12969

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

[_separable]

2.328

12970

\[ {}\tan \left (\theta \right )+2 r \theta ^{\prime } = 0 \]

[_separable]

2.495

12971

\[ {}\left ({\mathrm e}^{v}+1\right ) \cos \left (u \right )+{\mathrm e}^{v} \left (1+\sin \left (u \right )\right ) v^{\prime } = 0 \]

[_separable]

2.538

12972

\[ {}\left (4+x \right ) \left (1+y^{2}\right )+y \left (x^{2}+3 x +2\right ) y^{\prime } = 0 \]

[_separable]

2.219

12973

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

[_linear]

1.188

12974

\[ {}2 x y+3 y^{2}-\left (2 x y+x^{2}\right ) y^{\prime } = 0 \]

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

3.914

12975

\[ {}v^{3}+\left (u^{3}-u v^{2}\right ) v^{\prime } = 0 \]

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

12.676

12976

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

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

4.095

12977

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

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

8.107

12978

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

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

7.020

12979

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

[[_homogeneous, ‘class C‘], _dAlembert]

18.233

12980

\[ {}y+2+y \left (4+x \right ) y^{\prime } = 0 \]
i.c.

[_separable]

2.718

12981

\[ {}8 \cos \left (y\right )^{2}+\csc \left (x \right )^{2} y^{\prime } = 0 \]
i.c.

[_separable]

3.181

12982

\[ {}\left (3 x +8\right ) \left (y^{2}+4\right )-4 y \left (x^{2}+5 x +6\right ) y^{\prime } = 0 \]
i.c.

[_separable]

3.121

12983

\[ {}x^{2}+3 y^{2}-2 x y y^{\prime } = 0 \]
i.c.

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

5.834

12984

\[ {}2 x -5 y+\left (4 x -y\right ) y^{\prime } = 0 \]
i.c.

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

4.626

12985

\[ {}3 x^{2}+9 x y+5 y^{2}-\left (6 x^{2}+4 x y\right ) y^{\prime } = 0 \]
i.c.

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

130.185

12986

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

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

3.738

12987

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

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

3.910

12988

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

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

54.919

12989

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

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

5.031

12990

\[ {}y^{\prime }+\frac {3 y}{x} = 6 x^{2} \]

[_linear]

1.381

12991

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

[_linear]

1.240

12992

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

[[_linear, ‘class A‘]]

1.544

12993

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

[_separable]

1.143

12994

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

[_separable]

1.181

12995

\[ {}\left (u^{2}+1\right ) v^{\prime }+4 v u = 3 u \]

[_separable]

1.312

12996

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

[_linear]

1.334

12997

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

[_linear]

1.509

12998

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

[_linear]

1.035

12999

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

[_rational, [_1st_order, ‘_with_symmetry_[F(x)*G(y),0]‘]]

1.213

13000

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

[_linear]

1.527