2.2.177 Problems 17601 to 17700

Table 2.355: Main lookup table. Sorted sequentially by problem number.

#

ODE

CAS classification

Solved?

time (sec)

17601

\[ {}y^{\prime \prime }-9 y^{\prime }+9 y = 0 \]

[[_2nd_order, _missing_x]]

1.348

17602

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

[[_2nd_order, _missing_x]]

1.256

17603

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

[[_2nd_order, _missing_x]]

1.187

17604

\[ {}9 y^{\prime \prime }-24 y^{\prime }+16 y = 0 \]

[[_2nd_order, _missing_x]]

1.193

17605

\[ {}4 y^{\prime \prime }+9 y = 0 \]

[[_2nd_order, _missing_x]]

2.266

17606

\[ {}4 y^{\prime \prime }+9 y^{\prime }-9 y = 0 \]

[[_2nd_order, _missing_x]]

1.093

17607

\[ {}y^{\prime \prime }+y^{\prime }+\frac {5 y}{4} = 0 \]

[[_2nd_order, _missing_x]]

1.536

17608

\[ {}y^{\prime \prime }+4 y^{\prime }+\frac {25 y}{4} = 0 \]

[[_2nd_order, _missing_x]]

1.924

17609

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

[[_2nd_order, _missing_x]]

1.646

17610

\[ {}y^{\prime \prime }+16 y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

2.918

17611

\[ {}9 y^{\prime \prime }-12 y^{\prime }+4 y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

1.559

17612

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

[[_2nd_order, _missing_x]]

1.345

17613

\[ {}y^{\prime \prime }+4 y^{\prime }+5 y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

2.300

17614

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

[[_2nd_order, _missing_x]]

1.368

17615

\[ {}y^{\prime \prime }+6 y^{\prime }+9 y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

1.484

17616

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

[[_2nd_order, _missing_x]]

2.135

17617

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

[[_2nd_order, _missing_x]]

2.450

17618

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

[[_2nd_order, _missing_x]]

3.253

17619

\[ {}y^{\prime \prime }+4 y^{\prime }+4 y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

1.526

17620

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

[[_2nd_order, _missing_x]]

1.849

17621

\[ {}y^{\prime \prime }+y^{\prime }+\frac {5 y}{4} = 0 \]
i.c.

[[_2nd_order, _missing_x]]

2.358

17622

\[ {}2 y^{\prime \prime }+y^{\prime }-4 y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

1.773

17623

\[ {}y^{\prime \prime }+8 y^{\prime }-9 y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

1.683

17624

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

[[_2nd_order, _missing_x]]

2.424

17625

\[ {}4 y^{\prime \prime }-y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

2.781

17626

\[ {}a \,x^{2} y^{\prime \prime }+b x y^{\prime }+c y = 0 \]

[[_Emden, _Fowler]]

2.287

17627

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

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

1.348

17628

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

[[_2nd_order, _exact, _linear, _homogeneous]]

1.278

17629

\[ {}x^{2} y^{\prime \prime }+3 y^{\prime } x +\frac {5 y}{4} = 0 \]

[[_Emden, _Fowler]]

1.962

17630

\[ {}x^{2} y^{\prime \prime }-4 y^{\prime } x -6 y = 0 \]

[[_2nd_order, _exact, _linear, _homogeneous]]

1.181

17631

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

[[_2nd_order, _exact, _linear, _homogeneous]]

0.847

17632

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

[[_Emden, _Fowler]]

1.076

17633

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

[[_Emden, _Fowler]]

2.725

17634

\[ {}2 x^{2} y^{\prime \prime }-4 y^{\prime } x +6 y = 0 \]

[[_Emden, _Fowler]]

2.738

17635

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

[[_2nd_order, _exact, _linear, _homogeneous]]

1.831

17636

\[ {}4 x^{2} y^{\prime \prime }+8 y^{\prime } x +17 y = 0 \]
i.c.

[[_Emden, _Fowler]]

3.771

17637

\[ {}x^{2} y^{\prime \prime }-5 y^{\prime } x +9 y = 0 \]
i.c.

[[_Emden, _Fowler]]

1.672

17638

\[ {}x^{2} y^{\prime \prime }+3 y^{\prime } x +5 y = 0 \]
i.c.

[[_Emden, _Fowler]]

3.456

17639

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

[[_2nd_order, _missing_x]]

3.059

17640

\[ {}y^{\prime \prime }+\frac {y^{\prime }}{4}+2 y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

2.859

17641

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

[[_2nd_order, _missing_x]]

24.995

17642

\[ {}y^{\prime \prime }-2 y^{\prime }-3 y = 3 \,{\mathrm e}^{2 t} \]

[[_2nd_order, _with_linear_symmetries]]

1.280

17643

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

[[_2nd_order, _linear, _nonhomogeneous]]

12.362

17644

\[ {}y^{\prime \prime }-2 y^{\prime }-3 y = -3 t \,{\mathrm e}^{-t} \]

[[_2nd_order, _linear, _nonhomogeneous]]

1.418

17645

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

[[_2nd_order, _missing_y]]

3.216

17646

\[ {}y^{\prime \prime }+9 y = t^{2} {\mathrm e}^{3 t}+6 \]

[[_2nd_order, _linear, _nonhomogeneous]]

3.616

17647

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

[[_2nd_order, _with_linear_symmetries]]

1.347

17648

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

[[_2nd_order, _with_linear_symmetries]]

1.335

17649

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

[[_2nd_order, _with_linear_symmetries]]

1.299

17650

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

[[_2nd_order, _with_linear_symmetries]]

1.369

17651

\[ {}4 y^{\prime \prime }-4 y^{\prime }+y = 16 \,{\mathrm e}^{\frac {t}{2}} \]

[[_2nd_order, _with_linear_symmetries]]

1.375

17652

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

[[_2nd_order, _linear, _nonhomogeneous]]

2.118

17653

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

[[_2nd_order, _linear, _nonhomogeneous]]

2.829

17654

\[ {}u^{\prime \prime }+w_{0}^{2} u = \cos \left (w t \right ) \]

[[_2nd_order, _linear, _nonhomogeneous]]

2.648

17655

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

[[_2nd_order, _linear, _nonhomogeneous]]

26.737

17656

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

[[_2nd_order, _linear, _nonhomogeneous]]

3.470

17657

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

[[_2nd_order, _with_linear_symmetries]]

1.338

17658

\[ {}y^{\prime \prime }+4 y = t^{2}+3 \,{\mathrm e}^{t} \]
i.c.

[[_2nd_order, _linear, _nonhomogeneous]]

5.387

17659

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

[[_2nd_order, _linear, _nonhomogeneous]]

1.845

17660

\[ {}y^{\prime \prime }-2 y^{\prime }-3 y = 3 t \,{\mathrm e}^{2 t} \]
i.c.

[[_2nd_order, _linear, _nonhomogeneous]]

1.468

17661

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

[[_2nd_order, _linear, _nonhomogeneous]]

4.266

17662

\[ {}y^{\prime \prime }+2 y^{\prime }+5 y = 4 \,{\mathrm e}^{-t} \cos \left (2 t \right ) \]
i.c.

[[_2nd_order, _linear, _nonhomogeneous]]

12.630

17663

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

[[_2nd_order, _missing_y]]

73.302

17664

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

[[_2nd_order, _linear, _nonhomogeneous]]

3.474

17665

\[ {}y^{\prime \prime }-5 y^{\prime }+6 y = {\mathrm e}^{t} \cos \left (2 t \right )+{\mathrm e}^{2 t} \left (3 t +4\right ) \sin \left (t \right ) \]

[[_2nd_order, _linear, _nonhomogeneous]]

5.452

17666

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

[[_2nd_order, _linear, _nonhomogeneous]]

9.419

17667

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

[[_2nd_order, _linear, _nonhomogeneous]]

29.787

17668

\[ {}y^{\prime \prime }+4 y = t^{2} \sin \left (2 t \right )+\left (6 t +7\right ) \cos \left (2 t \right ) \]

[[_2nd_order, _linear, _nonhomogeneous]]

5.833

17669

\[ {}y^{\prime \prime }+3 y^{\prime }+2 y = {\mathrm e}^{t} \left (t^{2}+1\right ) \sin \left (2 t \right )+3 \,{\mathrm e}^{-t} \cos \left (t \right )+4 \,{\mathrm e}^{t} \]

[[_2nd_order, _linear, _nonhomogeneous]]

73.456

17670

\[ {}y^{\prime \prime }+2 y^{\prime }+5 y = 3 t \,{\mathrm e}^{-t} \cos \left (2 t \right )-2 t \,{\mathrm e}^{-2 t} \cos \left (t \right ) \]

[[_2nd_order, _linear, _nonhomogeneous]]

94.791

17671

\[ {}y^{\prime \prime }-3 y^{\prime }-4 y = 2 \,{\mathrm e}^{-t} \]

[[_2nd_order, _with_linear_symmetries]]

1.381

17672

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

[[_2nd_order, _with_linear_symmetries]]

1.701

17673

\[ {}x^{2} y^{\prime \prime }+7 y^{\prime } x +5 y = x \]

[[_2nd_order, _exact, _linear, _nonhomogeneous]]

1.649

17674

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

[[_2nd_order, _with_linear_symmetries]]

2.217

17675

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

[[_2nd_order, _linear, _nonhomogeneous]]

5.146

17676

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

[[_2nd_order, _linear, _nonhomogeneous]]

6.243

17677

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

[[_2nd_order, _linear, _nonhomogeneous]]

16.817

17678

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

[[_2nd_order, _linear, _nonhomogeneous]]

3.688

17679

\[ {}y^{\prime \prime }+\frac {y^{\prime }}{4}+2 y = 2 \cos \left (w t \right ) \]
i.c.

[[_2nd_order, _linear, _nonhomogeneous]]

76.358

17680

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

[[_2nd_order, _linear, _nonhomogeneous]]

2.437

17681

\[ {}y^{\prime \prime }+y = 3 \cos \left (w t \right ) \]
i.c.

[[_2nd_order, _linear, _nonhomogeneous]]

2.670

17682

\[ {}y^{\prime \prime }+\frac {y^{\prime }}{8}+4 y = 3 \cos \left (\frac {t}{4}\right ) \]
i.c.

[[_2nd_order, _linear, _nonhomogeneous]]

74.442

17683

\[ {}y^{\prime \prime }+\frac {y^{\prime }}{8}+4 y = 3 \cos \left (2 t \right ) \]
i.c.

[[_2nd_order, _linear, _nonhomogeneous]]

75.361

17684

\[ {}y^{\prime \prime }+\frac {y^{\prime }}{8}+4 y = 3 \cos \left (6 t \right ) \]
i.c.

[[_2nd_order, _linear, _nonhomogeneous]]

76.782

17685

\[ {}y^{\prime \prime }+y+\frac {y^{3}}{5} = \cos \left (w t \right ) \]
i.c.

[NONE]

0.441

17686

\[ {}y^{\prime \prime }+\frac {y^{\prime }}{5}+y+\frac {y^{3}}{5} = \cos \left (w t \right ) \]
i.c.

[NONE]

0.322

17687

\[ {}y^{\prime \prime }-5 y^{\prime }+6 y = 2 \,{\mathrm e}^{t} \]

[[_2nd_order, _with_linear_symmetries]]

1.251

17688

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

[[_2nd_order, _with_linear_symmetries]]

1.374

17689

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

[[_2nd_order, _with_linear_symmetries]]

1.373

17690

\[ {}4 y^{\prime \prime }-4 y^{\prime }+y = 16 \,{\mathrm e}^{\frac {t}{2}} \]

[[_2nd_order, _with_linear_symmetries]]

1.387

17691

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

[[_2nd_order, _linear, _nonhomogeneous]]

3.079

17692

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

[[_2nd_order, _linear, _nonhomogeneous]]

8.752

17693

\[ {}y^{\prime \prime }+4 y^{\prime }+4 y = \frac {{\mathrm e}^{2 t}}{t^{2}} \]

[[_2nd_order, _linear, _nonhomogeneous]]

1.635

17694

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

[[_2nd_order, _linear, _nonhomogeneous]]

5.391

17695

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

[[_2nd_order, _linear, _nonhomogeneous]]

72.149

17696

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

[[_2nd_order, _linear, _nonhomogeneous]]

3.456

17697

\[ {}y^{\prime \prime }-5 y^{\prime }+6 y = g \left (t \right ) \]

[[_2nd_order, _linear, _nonhomogeneous]]

0.654

17698

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

[[_2nd_order, _linear, _nonhomogeneous]]

0.851

17699

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

[[_2nd_order, _with_linear_symmetries]]

1.505

17700

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

[[_2nd_order, _with_linear_symmetries]]

1.219