2.2.136 Problems 13501 to 13600

Table 2.273: Main lookup table. Sorted sequentially by problem number.

#

ODE

CAS classification

Solved?

time (sec)

13501

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

[[_2nd_order, _with_linear_symmetries]]

0.156

13502

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

[[_2nd_order, _with_linear_symmetries]]

0.112

13503

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

[[_2nd_order, _with_linear_symmetries]]

0.639

13504

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

[[_2nd_order, _with_linear_symmetries]]

0.623

13505

\[ {}x^{2} y^{\prime \prime }-x y^{\prime }+\left (x^{2}+\frac {8}{9}\right ) y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

0.631

13506

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

[[_2nd_order, _with_linear_symmetries]]

0.635

13507

\[ {}x^{2} y^{\prime \prime }+x y^{\prime }+\left (x^{2}-\frac {1}{9}\right ) y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

0.613

13508

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

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

0.652

13509

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

[[_2nd_order, _with_linear_symmetries]]

0.683

13510

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

[_Lienard]

0.577

13511

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

[[_2nd_order, _with_linear_symmetries]]

0.653

13512

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

[[_2nd_order, _with_linear_symmetries]]

0.622

13513

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

[_Lienard]

0.608

13514

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

[[_2nd_order, _with_linear_symmetries]]

0.710

13515

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

[[_2nd_order, _with_linear_symmetries]]

0.739

13516

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

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

0.613

13517

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

[[_2nd_order, _with_linear_symmetries]]

1.250

13518

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

[[_2nd_order, _with_linear_symmetries]]

1.286

13519

\[ {}x^{2} y^{\prime \prime }-x y^{\prime }+8 \left (x^{2}-1\right ) y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

1.293

13520

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

[[_2nd_order, _with_linear_symmetries]]

1.390

13521

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

[[_Emden, _Fowler]]

0.505

13522

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

[[_Emden, _Fowler]]

1.203

13523

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

[[_2nd_order, _with_linear_symmetries]]

0.507

13524

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

[[_2nd_order, _with_linear_symmetries]]

1.235

13525

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

system_of_ODEs

0.277

13526

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

system_of_ODEs

0.175

13527

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

system_of_ODEs

0.176

13528

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

system_of_ODEs

0.103

13529

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

system_of_ODEs

0.767

13530

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

system_of_ODEs

0.476

13531

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

system_of_ODEs

0.713

13532

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

system_of_ODEs

0.710

13533

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

system_of_ODEs

0.305

13534

\[ {}\left [\begin {array}{c} x^{\prime }-y^{\prime }-2 x+4 y=t \\ x^{\prime }+y^{\prime }-x-y=1 \end {array}\right ] \]

system_of_ODEs

0.486

13535

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

system_of_ODEs

0.459

13536

\[ {}\left [\begin {array}{c} x^{\prime }+y^{\prime }-x+5 y=t^{2} \\ x^{\prime }+2 y^{\prime }-2 x+4 y=2 t +1 \end {array}\right ] \]

system_of_ODEs

1.559

13537

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

system_of_ODEs

0.479

13538

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

system_of_ODEs

0.718

13539

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

system_of_ODEs

0.520

13540

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

system_of_ODEs

0.467

13541

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

system_of_ODEs

0.468

13542

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

system_of_ODEs

0.567

13543

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

system_of_ODEs

0.585

13544

\[ {}\left [\begin {array}{c} x^{\prime }=5 x+2 y+5 t \\ y^{\prime }=3 x+4 y+17 t \end {array}\right ] \]

system_of_ODEs

0.504

13545

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

system_of_ODEs

0.439

13546

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

system_of_ODEs

0.447

13547

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

system_of_ODEs

0.604

13548

\[ {}\left [\begin {array}{c} x^{\prime }=-2 x+y \\ y^{\prime }=7 x+4 y \end {array}\right ] \]
i.c.

system_of_ODEs

0.605

13549

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

Eigenvectors

0.116

13550

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

Eigenvectors

0.119

13551

\(\left [\begin {array}{cc} 3 & 1 \\ 12 & 2 \end {array}\right ]\)

Eigenvectors

0.122

13552

\(\left [\begin {array}{cc} -2 & 7 \\ 3 & 2 \end {array}\right ]\)

Eigenvectors

0.131

13553

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

Eigenvectors

0.117

13554

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

Eigenvectors

0.132

13555

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

Eigenvectors

0.275

13556

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

Eigenvectors

0.287

13557

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

Eigenvectors

0.268

13558

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

Eigenvectors

0.256

13559

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

Eigenvectors

0.256

13560

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

Eigenvectors

0.284

13561

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

Eigenvectors

0.283

13562

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

Eigenvectors

0.284

13563

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

system_of_ODEs

0.533

13564

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

system_of_ODEs

0.501

13565

\[ {}y^{\prime }-y = {\mathrm e}^{3 t} \]
i.c.

[[_linear, ‘class A‘]]

0.479

13566

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

[[_linear, ‘class A‘]]

0.485

13567

\[ {}y^{\prime \prime }-5 y^{\prime }+6 y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

0.200

13568

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

[[_2nd_order, _missing_x]]

0.299

13569

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

[[_2nd_order, _missing_x]]

0.355

13570

\[ {}y^{\prime \prime }+2 y^{\prime }+5 y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

0.374

13571

\[ {}y^{\prime \prime }-y^{\prime }-2 y = 18 \,{\mathrm e}^{-t} \sin \left (3 t \right ) \]
i.c.

[[_2nd_order, _linear, _nonhomogeneous]]

0.507

13572

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

[[_2nd_order, _linear, _nonhomogeneous]]

0.338

13573

\[ {}y^{\prime \prime }+7 y^{\prime }+10 y = 4 t \,{\mathrm e}^{-3 t} \]
i.c.

[[_2nd_order, _linear, _nonhomogeneous]]

0.333

13574

\[ {}y^{\prime \prime }-8 y^{\prime }+15 y = 9 t \,{\mathrm e}^{2 t} \]
i.c.

[[_2nd_order, _linear, _nonhomogeneous]]

0.328

13575

\[ {}y^{\prime \prime \prime }-5 y^{\prime \prime }+7 y^{\prime }-3 y = 20 \sin \left (t \right ) \]
i.c.

[[_3rd_order, _linear, _nonhomogeneous]]

0.440

13576

\[ {}y^{\prime \prime \prime }-6 y^{\prime \prime }+11 y^{\prime }-6 y = 36 t \,{\mathrm e}^{4 t} \]
i.c.

[[_3rd_order, _linear, _nonhomogeneous]]

0.399

13577

\[ {}y^{\prime \prime }-3 y^{\prime }+2 y = \left \{\begin {array}{cc} 2 & 0<t <4 \\ 0 & 4<t \end {array}\right . \]
i.c.

[[_2nd_order, _linear, _nonhomogeneous]]

0.920

13578

\[ {}y^{\prime \prime }+5 y^{\prime }+6 y = \left \{\begin {array}{cc} 6 & 0<t <2 \\ 0 & 2<t \end {array}\right . \]
i.c.

[[_2nd_order, _linear, _nonhomogeneous]]

1.089

13579

\[ {}y^{\prime \prime }+4 y^{\prime }+5 y = \left \{\begin {array}{cc} 1 & 0<t <\frac {\pi }{2} \\ 0 & \frac {\pi }{2}<t \end {array}\right . \]
i.c.

[[_2nd_order, _linear, _nonhomogeneous]]

2.651

13580

\[ {}y^{\prime \prime }+6 y^{\prime }+8 y = \left \{\begin {array}{cc} 3 & 0<t <2 \pi \\ 0 & 2 \pi <t \end {array}\right . \]
i.c.

[[_2nd_order, _linear, _nonhomogeneous]]

1.859

13581

\[ {}y^{\prime \prime }+4 y = \left \{\begin {array}{cc} -4 t +8 \pi & 0<t <2 \pi \\ 0 & 2<t \end {array}\right . \]
i.c.

[[_2nd_order, _linear, _nonhomogeneous]]

1.156

13582

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

[[_2nd_order, _linear, _nonhomogeneous]]

0.753

13583

\[ {}t x^{\prime \prime }-2 x^{\prime }+9 t^{5} x = 0 \]

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

1.253

13584

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

[[_3rd_order, _with_linear_symmetries]]

0.114

13585

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

[[_2nd_order, _with_linear_symmetries]]

1.436

13586

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

[[_3rd_order, _with_linear_symmetries]]

0.042

13587

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

[[_Emden, _Fowler]]

2.262

13588

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

[[_2nd_order, _with_linear_symmetries]]

1.007

13589

\[ {}t^{2} x^{\prime \prime }+\left (2 t^{3}+7 t \right ) x^{\prime }+\left (8 t^{2}+8\right ) x = 0 \]

[[_2nd_order, _with_linear_symmetries]]

1.182

13590

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

[[_2nd_order, _with_linear_symmetries]]

1.260

13591

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

[[_Emden, _Fowler]]

0.745

13592

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

[[_2nd_order, _with_linear_symmetries]]

1.853

13593

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

[[_2nd_order, _with_linear_symmetries]]

1.013

13594

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

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

1.145

13595

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

[[_2nd_order, _with_linear_symmetries]]

0.974

13596

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

[_Lienard]

1.252

13597

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

[[_2nd_order, _with_linear_symmetries]]

0.433

13598

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

[[_2nd_order, _with_linear_symmetries]]

0.418

13599

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

[[_2nd_order, _missing_x]]

3.071

13600

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

[[_2nd_order, _missing_x]]

3.020