2.2.156 Problems 15501 to 15600

Table 2.313: Main lookup table. Sorted sequentially by problem number.

#

ODE

CAS classification

Solved?

time (sec)

15501

\[ {}y^{\prime \prime }+9 y = \tan \left (3 t \right )^{2} \]

[[_2nd_order, _linear, _nonhomogeneous]]

6.280

15502

\[ {}y^{\prime \prime }+9 y = \sec \left (3 t \right ) \]

[[_2nd_order, _linear, _nonhomogeneous]]

2.569

15503

\[ {}y^{\prime \prime }+9 y = \tan \left (3 t \right ) \]

[[_2nd_order, _linear, _nonhomogeneous]]

4.507

15504

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

[[_2nd_order, _linear, _nonhomogeneous]]

5.161

15505

\[ {}y^{\prime \prime }+16 y = \tan \left (2 t \right ) \]

[[_2nd_order, _linear, _nonhomogeneous]]

3.915

15506

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

[[_2nd_order, _linear, _nonhomogeneous]]

5.260

15507

\[ {}y^{\prime \prime }+9 y = \sec \left (3 t \right ) \tan \left (3 t \right ) \]

[[_2nd_order, _linear, _nonhomogeneous]]

3.396

15508

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

[[_2nd_order, _linear, _nonhomogeneous]]

3.185

15509

\[ {}y^{\prime \prime }+9 y = \frac {\csc \left (3 t \right )}{2} \]
i.c.

[[_2nd_order, _linear, _nonhomogeneous]]

3.489

15510

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

[[_2nd_order, _linear, _nonhomogeneous]]

6.092

15511

\[ {}y^{\prime \prime }-16 y = 16 t \,{\mathrm e}^{-4 t} \]
i.c.

[[_2nd_order, _linear, _nonhomogeneous]]

1.313

15512

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

[[_2nd_order, _linear, _nonhomogeneous]]

3.934

15513

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

[[_2nd_order, _linear, _nonhomogeneous]]

4.523

15514

\[ {}y^{\prime \prime }+9 y = \csc \left (3 t \right ) \]
i.c.

[[_2nd_order, _linear, _nonhomogeneous]]

3.327

15515

\[ {}y^{\prime \prime }+4 y^{\prime }+3 y = 65 \cos \left (2 t \right ) \]

[[_2nd_order, _linear, _nonhomogeneous]]

1.772

15516

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

[[_2nd_order, _exact, _linear, _nonhomogeneous]]

1.799

15517

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

[[_2nd_order, _with_linear_symmetries]]

3.431

15518

\[ {}t^{2} y^{\prime \prime }-4 t y^{\prime }-6 y = 2 \ln \left (t \right ) \]

[[_2nd_order, _exact, _linear, _nonhomogeneous]]

1.824

15519

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

[[_2nd_order, _with_linear_symmetries]]

1.053

15520

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

[[_2nd_order, _linear, _nonhomogeneous]]

0.988

15521

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

[[_2nd_order, _with_linear_symmetries]]

0.390

15522

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

[[_2nd_order, _with_linear_symmetries]]

3.905

15523

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

[_Lienard]

0.381

15524

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

[[_2nd_order, _with_linear_symmetries]]

3.842

15525

\[ {}4 t^{2} y^{\prime \prime }+4 t y^{\prime }+\left (16 t^{2}-1\right ) y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

0.365

15526

\[ {}4 t^{2} y^{\prime \prime }+4 t y^{\prime }+\left (16 t^{2}-1\right ) y = 16 t^{{3}/{2}} \]
i.c.

[[_2nd_order, _linear, _nonhomogeneous]]

3.599

15527

\[ {}t^{2} \left (\ln \left (t \right )-1\right ) y^{\prime \prime }-t y^{\prime }+y = -\frac {3 \left (1+\ln \left (t \right )\right )}{4 \sqrt {t}} \]
i.c.

[[_2nd_order, _with_linear_symmetries]]

1.207

15528

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

[[_2nd_order, _with_linear_symmetries]]

3.240

15529

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

[[_3rd_order, _quadrature]]

0.033

15530

\[ {}y^{\prime \prime \prime }-10 y^{\prime \prime }+25 y^{\prime } = 0 \]

[[_3rd_order, _missing_x]]

0.061

15531

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

[[_3rd_order, _missing_x]]

0.098

15532

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

[[_high_order, _missing_x]]

0.066

15533

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

[[_3rd_order, _missing_x]]

0.063

15534

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

[[_3rd_order, _missing_x]]

0.066

15535

\[ {}6 y^{\prime \prime \prime }-5 y^{\prime \prime }-2 y^{\prime }+y = 0 \]

[[_3rd_order, _missing_x]]

0.068

15536

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

[[_3rd_order, _missing_x]]

0.070

15537

\[ {}5 y^{\prime \prime \prime }-15 y^{\prime }+11 y = 0 \]

[[_3rd_order, _missing_x]]

0.110

15538

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

[[_high_order, _missing_x]]

0.059

15539

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

[[_high_order, _missing_x]]

0.062

15540

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

[[_high_order, _missing_x]]

0.071

15541

\[ {}y^{\prime \prime \prime \prime }-6 y^{\prime \prime \prime }-y^{\prime \prime }+54 y^{\prime }-72 y = 0 \]

[[_high_order, _missing_x]]

0.069

15542

\[ {}y^{\prime \prime \prime \prime }+7 y^{\prime \prime \prime }+6 y^{\prime \prime }-32 y^{\prime }-32 y = 0 \]

[[_high_order, _missing_x]]

0.072

15543

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

[[_high_order, _missing_x]]

0.074

15544

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

[[_high_order, _missing_x]]

0.064

15545

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

[[_high_order, _missing_x]]

0.066

15546

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

[[_high_order, _missing_x]]

0.071

15547

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

[[_high_order, _missing_x]]

0.077

15548

\[ {}y^{\prime \prime \prime \prime }+8 y^{\prime \prime }+16 y = 0 \]

[[_high_order, _missing_x]]

0.084

15549

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

[[_high_order, _missing_x]]

0.083

15550

\[ {}y^{\left (6\right )}+12 y^{\prime \prime \prime \prime }+48 y^{\prime \prime }+64 y = 0 \]

[[_high_order, _missing_x]]

0.094

15551

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

[[_3rd_order, _missing_x]]

0.115

15552

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

[[_3rd_order, _missing_x]]

0.128

15553

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

[[_high_order, _missing_x]]

0.126

15554

\[ {}y^{\prime \prime \prime \prime }-8 y^{\prime \prime }+16 y = 0 \]
i.c.

[[_high_order, _missing_x]]

0.130

15555

\[ {}24 y^{\prime \prime \prime }-26 y^{\prime \prime }+9 y^{\prime }-y = 0 \]
i.c.

[[_3rd_order, _missing_x]]

0.131

15556

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

[[_high_order, _missing_x]]

0.134

15557

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

[[_high_order, _missing_x]]

0.083

15558

\[ {}8 y^{\left (5\right )}+4 y^{\prime \prime \prime \prime }+66 y^{\prime \prime \prime }-41 y^{\prime \prime }-37 y^{\prime } = 0 \]
i.c.

[[_high_order, _missing_x]]

0.095

15559

\[ {}2 y^{\left (5\right )}+7 y^{\prime \prime \prime \prime }+17 y^{\prime \prime \prime }+17 y^{\prime \prime }+5 y^{\prime } = 0 \]
i.c.

[[_high_order, _missing_x]]

0.091

15560

\[ {}y^{\left (5\right )}+8 y^{\prime \prime \prime \prime } = 0 \]
i.c.

[[_high_order, _missing_x]]

0.130

15561

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

[[_high_order, _missing_x]]

0.148

15562

\[ {}y^{\prime \prime \prime }+9 y^{\prime \prime }+16 y^{\prime }-26 y = 0 \]

[[_3rd_order, _missing_x]]

0.069

15563

\[ {}y^{\prime \prime \prime \prime }+12 y^{\prime \prime \prime }+60 y^{\prime \prime }+124 y^{\prime }+75 y = 0 \]

[[_high_order, _missing_x]]

0.074

15564

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

[[_3rd_order, _missing_x]]

0.116

15565

\[ {}y^{\prime \prime \prime \prime }-8 y^{\prime \prime \prime }+30 y^{\prime \prime }-56 y^{\prime }+49 y = 0 \]
i.c.

[[_high_order, _missing_x]]

0.133

15566

\[ {}\frac {31 y^{\prime \prime \prime }}{100}+\frac {56 y^{\prime \prime }}{5}-\frac {49 y^{\prime }}{5}+\frac {53 y}{10} = 0 \]
i.c.

[[_3rd_order, _missing_x]]

0.513

15567

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

[[_2nd_order, _missing_x], [_2nd_order, _reducible, _mu_xy]]

2.705

15568

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

[[_3rd_order, _missing_y]]

0.095

15569

\[ {}y^{\prime \prime \prime \prime }-16 y = 1 \]

[[_high_order, _missing_x]]

0.108

15570

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

[[_high_order, _missing_x]]

0.104

15571

\[ {}y^{\prime \prime \prime \prime }+9 y^{\prime \prime } = 1 \]

[[_high_order, _missing_x]]

0.101

15572

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

[[_high_order, _missing_y]]

0.118

15573

\[ {}y^{\prime \prime \prime }+10 y^{\prime \prime }+34 y^{\prime }+40 y = t \,{\mathrm e}^{-4 t}+2 \,{\mathrm e}^{-3 t} \cos \left (t \right ) \]

[[_3rd_order, _linear, _nonhomogeneous]]

1.160

15574

\[ {}y^{\prime \prime \prime }+6 y^{\prime \prime }+11 y^{\prime }+6 y = 2 \,{\mathrm e}^{-3 t}-t \,{\mathrm e}^{-t} \]

[[_3rd_order, _linear, _nonhomogeneous]]

0.157

15575

\[ {}y^{\prime \prime \prime \prime }-6 y^{\prime \prime \prime }+13 y^{\prime \prime }-24 y^{\prime }+36 y = 108 t \]

[[_high_order, _with_linear_symmetries]]

0.116

15576

\[ {}y^{\prime \prime \prime }+6 y^{\prime \prime }-14 y^{\prime }-104 y = -111 \,{\mathrm e}^{t} \]

[[_3rd_order, _with_linear_symmetries]]

0.115

15577

\[ {}y^{\prime \prime \prime \prime }-10 y^{\prime \prime \prime }+38 y^{\prime \prime }-64 y^{\prime }+40 y = 153 \,{\mathrm e}^{-t} \]

[[_high_order, _with_linear_symmetries]]

0.126

15578

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

[[_3rd_order, _missing_y]]

0.540

15579

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

[[_3rd_order, _missing_y]]

0.632

15580

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

[[_high_order, _missing_y]]

0.628

15581

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

[[_high_order, _missing_y]]

0.647

15582

\[ {}y^{\prime \prime \prime }+9 y^{\prime } = \sec \left (3 t \right ) \]

[[_3rd_order, _missing_y]]

1.534

15583

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

[[_3rd_order, _missing_y]]

0.642

15584

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

[[_3rd_order, _missing_y]]

0.618

15585

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

[[_3rd_order, _missing_y]]

0.216

15586

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

[[_3rd_order, _linear, _nonhomogeneous]]

0.217

15587

\[ {}y^{\prime \prime \prime }-4 y^{\prime \prime }-11 y^{\prime }+30 y = {\mathrm e}^{4 t} \]

[[_3rd_order, _with_linear_symmetries]]

0.109

15588

\[ {}y^{\prime \prime \prime }+3 y^{\prime \prime }-10 y^{\prime }-24 y = {\mathrm e}^{-3 t} \]

[[_3rd_order, _with_linear_symmetries]]

0.107

15589

\[ {}y^{\prime \prime \prime }-13 y^{\prime }+12 y = \cos \left (t \right ) \]

[[_3rd_order, _linear, _nonhomogeneous]]

0.122

15590

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

[[_3rd_order, _missing_y]]

0.125

15591

\[ {}y^{\left (6\right )}+y^{\prime \prime \prime \prime } = -24 \]

[[_high_order, _missing_x]]

0.108

15592

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

[[_high_order, _missing_y]]

0.579

15593

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

[[_3rd_order, _missing_y]]

0.164

15594

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

[[_high_order, _missing_y]]

0.638

15595

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

[[_3rd_order, _missing_y]]

0.548

15596

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

[[_high_order, _missing_y]]

0.426

15597

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

[[_high_order, _missing_y]]

0.115

15598

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

[[_3rd_order, _missing_y]]

0.494

15599

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

[[_3rd_order, _missing_y]]

0.519

15600

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

[[_3rd_order, _with_linear_symmetries]]

0.365