2.2.161 Problems 16001 to 16100

Table 2.323: Main lookup table. Sorted sequentially by problem number.

#

ODE

CAS classification

Solved?

time (sec)

16001

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

[[_2nd_order, _exact, _linear, _nonhomogeneous]]

1.684

16002

\[ {}y^{\prime }+y = \left \{\begin {array}{cc} 4 & 0\le t <2 \\ 0 & 2\le t \end {array}\right . \]
i.c.

[[_linear, ‘class A‘]]

0.682

16003

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

[[_linear, ‘class A‘]]

0.667

16004

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

[[_linear, ‘class A‘]]

1.355

16005

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

[[_linear, ‘class A‘]]

1.296

16006

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

[[_linear, ‘class A‘]]

1.174

16007

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

[[_linear, ‘class A‘]]

1.284

16008

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

[[_linear, ‘class A‘]]

1.227

16009

\[ {}y^{\prime }+3 y = 27 t^{2}+9 \]

[[_linear, ‘class A‘]]

1.280

16010

\[ {}y^{\prime }-\frac {y}{2} = 5 \cos \left (t \right )+2 \,{\mathrm e}^{t} \]

[[_linear, ‘class A‘]]

1.855

16011

\[ {}y^{\prime }+4 y = 8 \cos \left (4 t \right ) \]

[[_linear, ‘class A‘]]

1.446

16012

\[ {}y^{\prime }+10 y = 2 \,{\mathrm e}^{t} \]

[[_linear, ‘class A‘]]

1.303

16013

\[ {}y^{\prime }-3 y = 27 t^{2} \]

[[_linear, ‘class A‘]]

1.253

16014

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

[[_linear, ‘class A‘]]

1.177

16015

\[ {}y^{\prime }+y = 4+3 \,{\mathrm e}^{t} \]

[[_linear, ‘class A‘]]

1.315

16016

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

[[_linear, ‘class A‘]]

1.559

16017

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

[[_linear, ‘class A‘]]

1.513

16018

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

[[_linear, ‘class A‘]]

1.502

16019

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

[_linear]

1.307

16020

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

[[_linear, ‘class A‘]]

1.470

16021

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

[[_linear, ‘class A‘]]

1.594

16022

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

[[_linear, ‘class A‘]]

1.579

16023

\[ {}y^{\prime }+y = {\mathrm e}^{t} \]
i.c.

[[_linear, ‘class A‘]]

1.510

16024

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

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

54.742

16025

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

[_separable]

3.440

16026

\[ {}y \cos \left (t y\right )+t \cos \left (t y\right ) y^{\prime } = 0 \]

[_separable]

2.147

16027

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

[_linear]

11.576

16028

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

[_separable]

3.443

16029

\[ {}t -\sin \left (t \right ) y+\left (y^{6}+\cos \left (t \right )\right ) y^{\prime } = 0 \]

[_exact]

2.722

16030

\[ {}y \sin \left (2 t \right )+\left (\sqrt {y}+\cos \left (2 t \right )\right ) y^{\prime } = 0 \]

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

5.434

16031

\[ {}\ln \left (t y\right )+\frac {t y^{\prime }}{y} = 0 \]

[[_homogeneous, ‘class G‘], _exact]

2.028

16032

\[ {}{\mathrm e}^{t y}+\frac {t \,{\mathrm e}^{t y} y^{\prime }}{y} = 0 \]

[_separable]

2.360

16033

\[ {}3 t^{2}-y^{\prime } = 0 \]

[_quadrature]

0.475

16034

\[ {}-1+3 y^{2} y^{\prime } = 0 \]

[_quadrature]

7.096

16035

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

[_separable]

2.176

16036

\[ {}\frac {3 t^{2}}{y}-\frac {t^{3} y^{\prime }}{y^{2}} = 0 \]

[_separable]

2.320

16037

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

[_exact, _rational]

1.330

16038

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

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

3.008

16039

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

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

3.977

16040

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

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

1.990

16041

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

[_separable]

4.848

16042

\[ {}3 t^{2}+3 y^{2}+6 t y y^{\prime } = 0 \]

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

4.403

16043

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

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

1.977

16044

\[ {}3 t^{2} y+3 y^{2}-1+\left (t^{3}+6 t y\right ) y^{\prime } = 0 \]

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

1.462

16045

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

[_separable]

2.940

16046

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

[_exact]

37.468

16047

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

[‘y=_G(x,y’)‘]

53.982

16048

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

[_exact]

35.678

16049

\[ {}\left (3+t \right ) \cos \left (y+t \right )+\sin \left (y+t \right )+\left (3+t \right ) \cos \left (y+t \right ) y^{\prime } = 0 \]

[[_1st_order, _with_linear_symmetries], _exact]

22.595

16050

\[ {}\frac {2 t^{2} y \cos \left (t^{2}\right )-y \sin \left (t^{2}\right )}{t^{2}}+\frac {\left (2 t y+\sin \left (t^{2}\right )\right ) y^{\prime }}{t} = 0 \]

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

8.314

16051

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

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

5.456

16052

\[ {}2 t \sin \left (\frac {y}{t}\right )-y \cos \left (\frac {y}{t}\right )+t \cos \left (\frac {y}{t}\right ) y^{\prime } = 0 \]

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

4.717

16053

\[ {}2 t y^{2}+2 t^{2} y y^{\prime } = 0 \]
i.c.

[_separable]

2.714

16054

\[ {}1+\frac {y}{t^{2}}-\frac {y^{\prime }}{t} = 0 \]
i.c.

[_linear]

1.928

16055

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

[_linear]

1.425

16056

\[ {}1+5 t -y-\left (t +2 y\right ) y^{\prime } = 0 \]
i.c.

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

4.562

16057

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

[_exact]

1.756

16058

\[ {}2 t y \,{\mathrm e}^{t^{2}}+2 t \,{\mathrm e}^{-y}+\left ({\mathrm e}^{t^{2}}-t^{2} {\mathrm e}^{-y}+1\right ) y^{\prime } = 0 \]
i.c.

[_exact]

36.000

16059

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

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

41.819

16060

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

[_exact]

38.172

16061

\[ {}\frac {1}{t^{2}+1}-y^{2}-2 t y y^{\prime } = 0 \]
i.c.

[_exact, _rational, _Bernoulli]

3.971

16062

\[ {}\frac {2 t}{t^{2}+1}+y+\left ({\mathrm e}^{y}+t \right ) y^{\prime } = 0 \]
i.c.

[_exact]

2.814

16063

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

[_exact]

8.763

16064

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

[_exact]

42.169

16065

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

[_separable]

2.129

16066

\[ {}y \left (2 \,{\mathrm e}^{t}+4 t \right )+3 \left ({\mathrm e}^{t}+t^{2}\right ) y^{\prime } = 0 \]

[_separable]

2.211

16067

\[ {}y+\left (2 t -y \,{\mathrm e}^{y}\right ) y^{\prime } = 0 \]

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

1.209

16068

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

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

2.789

16069

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

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

1.227

16070

\[ {}5 t y+4 y^{2}+1+\left (t^{2}+2 t y\right ) y^{\prime } = 0 \]

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

1.448

16071

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

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

3.214

16072

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

[[_1st_order, ‘_with_symmetry_[F(x),G(x)]‘]]

2.092

16073

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

[_exact]

39.430

16074

\[ {}-1+{\mathrm e}^{t y} y+y \cos \left (t y\right )+\left (1+{\mathrm e}^{t y} t +t \cos \left (t y\right )\right ) y^{\prime } = 0 \]

[_exact]

37.029

16075

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

[_quadrature]

0.776

16076

\[ {}\frac {9 t}{5}+2 y+\left (2 t +2 y\right ) y^{\prime } = 0 \]

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

4.868

16077

\[ {}2 t +\frac {19 y}{10}+\left (\frac {19 t}{10}+2 y\right ) y^{\prime } = 0 \]

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

4.254

16078

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

[_rational, _Bernoulli]

1.315

16079

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

[_Bernoulli]

1.558

16080

\[ {}2 t y^{\prime }-y = 2 t y^{3} \cos \left (t \right ) \]

[_Bernoulli]

39.471

16081

\[ {}t y^{\prime }-y = t y^{3} \sin \left (t \right ) \]

[[_homogeneous, ‘class D‘], _Bernoulli]

39.037

16082

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

[_Bernoulli]

18.235

16083

\[ {}y^{\prime }+3 y = \sqrt {y}\, \sin \left (t \right ) \]

[_Bernoulli]

1.764

16084

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

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

2.173

16085

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

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

2.316

16086

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

[_separable]

2.282

16087

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

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

6.121

16088

\[ {}\cos \left (\frac {t}{y+t}\right )+{\mathrm e}^{\frac {2 y}{t}} y^{\prime } = 0 \]

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

19.975

16089

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

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

4.165

16090

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

[_separable]

10.407

16091

\[ {}\frac {2}{t}+\frac {1}{y}+\frac {t y^{\prime }}{y^{2}} = 0 \]

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

3.081

16092

\[ {}\frac {\sin \left (2 t \right )}{\cos \left (2 y\right )}+\frac {\ln \left (y\right ) y^{\prime }}{\ln \left (t \right )} = 0 \]

[_separable]

7.948

16093

\[ {}\sqrt {t^{2}+1}+y y^{\prime } = 0 \]

[_separable]

1.544

16094

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

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

4.661

16095

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

[_linear]

2.427

16096

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

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

3.922

16097

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

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

37.483

16098

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

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

7.780

16099

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

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

5.735

16100

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

[_linear]

1.502