2.16.5 Problems 401 to 500

Table 2.26: Main lookup table. Sorted sequentially by problem number.

#

ODE

Program classification

CAS classification

Solved?

Verified?

time (sec)

401

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

first order ode series method. Ordinary point, first order ode series method. Taylor series method

[_separable]

0.584

402

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

second order series method. Ordinary point, second order series method. Taylor series method

[[_2nd_order, _missing_x]]

0.494

403

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

second order series method. Ordinary point, second order series method. Taylor series method

[[_2nd_order, _missing_x]]

0.533

404

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

second order series method. Ordinary point, second order series method. Taylor series method

[[_2nd_order, _missing_x]]

0.589

405

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

second order series method. Ordinary point, second order series method. Taylor series method

[[_2nd_order, _with_linear_symmetries]]

0.671

406

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

first order ode series method. Regular singular point

[_separable]

0.391

407

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

first order ode series method. Regular singular point

[_separable]

0.404

408

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

first order ode series method. Irregular singular point

[_separable]

N/A

0.326

409

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

first order ode series method. Irregular singular point

[_separable]

N/A

0.263

410

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

i.c.

second order series method. Ordinary point, second order series method. Taylor series method

[[_2nd_order, _missing_x]]

2.132

411

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

i.c.

second order series method. Ordinary point, second order series method. Taylor series method

[[_2nd_order, _missing_x]]

1.742

412

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

i.c.

second order series method. Ordinary point, second order series method. Taylor series method

[[_2nd_order, _missing_x]]

1.858

413

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

i.c.

second order series method. Ordinary point, second order series method. Taylor series method

[[_2nd_order, _missing_x]]

1.863

414

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

second order series method. Regular singular point. Complex roots

[[_2nd_order, _with_linear_symmetries]]

1.774

415

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

i.c.

quadrature

[_quadrature]

0.427

416

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

second order series method. Ordinary point, second order series method. Taylor series method

[[_2nd_order, _exact, _linear, _homogeneous]]

1.105

417

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

second order series method. Ordinary point, second order series method. Taylor series method

[[_2nd_order, _exact, _linear, _homogeneous]]

0.939

418

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

second order series method. Ordinary point, second order series method. Taylor series method

[[_2nd_order, _exact, _linear, _homogeneous]]

0.802

419

\[ {}\left (x^{2}+1\right ) y^{\prime \prime }+6 x y^{\prime }+4 y = 0 \]

second order series method. Ordinary point, second order series method. Taylor series method

[[_2nd_order, _exact, _linear, _homogeneous]]

0.922

420

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

second order series method. Ordinary point, second order series method. Taylor series method

[[_2nd_order, _missing_y]]

0.594

421

\[ {}\left (x^{2}-1\right ) y^{\prime \prime }-6 x y^{\prime }+12 y = 0 \]

second order series method. Ordinary point, second order series method. Taylor series method

[_Gegenbauer]

1.015

422

\[ {}\left (x^{2}+3\right ) y^{\prime \prime }-7 x y^{\prime }+16 y = 0 \]

second order series method. Ordinary point, second order series method. Taylor series method

[[_2nd_order, _with_linear_symmetries]]

0.964

423

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

second order series method. Ordinary point, second order series method. Taylor series method

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

0.809

424

\[ {}\left (x^{2}-1\right ) y^{\prime \prime }+8 x y^{\prime }+12 y = 0 \]

second order series method. Ordinary point, second order series method. Taylor series method

[_Gegenbauer]

1.147

425

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

second order series method. Ordinary point, second order series method. Taylor series method

[[_2nd_order, _with_linear_symmetries]]

0.676

426

\[ {}5 y^{\prime \prime }-2 x y^{\prime }+10 y = 0 \]

second order series method. Ordinary point, second order series method. Taylor series method

[[_2nd_order, _with_linear_symmetries]]

1.157

427

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

second order series method. Ordinary point, second order series method. Taylor series method

[[_2nd_order, _with_linear_symmetries]]

1.052

428

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

second order series method. Ordinary point, second order series method. Taylor series method

[[_2nd_order, _exact, _linear, _homogeneous]]

0.918

429

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

second order series method. Ordinary point, second order series method. Taylor series method

[[_Emden, _Fowler]]

0.62

430

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

second order series method. Ordinary point, second order series method. Taylor series method

[[_Emden, _Fowler]]

0.658

431

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

i.c.

second order series method. Ordinary point, second order series method. Taylor series method

[[_2nd_order, _with_linear_symmetries]]

2.212

432

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

i.c.

second order series method. Ordinary point, second order series method. Taylor series method

[[_2nd_order, _with_linear_symmetries]]

2.279

433

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

i.c.

second order series method. Ordinary point, second order series method. Taylor series method

[[_2nd_order, _exact, _linear, _homogeneous]]

2.931

434

\[ {}\left (-x^{2}+2 x \right ) y^{\prime \prime }-6 \left (-1+x \right ) y^{\prime }-4 y = 0 \]

i.c.

second order series method. Ordinary point, second order series method. Taylor series method

[[_2nd_order, _exact, _linear, _homogeneous]]

2.664

435

\[ {}\left (x^{2}-6 x +10\right ) y^{\prime \prime }-4 \left (x -3\right ) y^{\prime }+6 y = 0 \]

i.c.

second order series method. Ordinary point, second order series method. Taylor series method

[[_2nd_order, _with_linear_symmetries]]

2.833

436

\[ {}\left (4 x^{2}+16 x +17\right ) y^{\prime \prime } = 8 y \]

i.c.

second order series method. Ordinary point, second order series method. Taylor series method

[[_2nd_order, _exact, _linear, _homogeneous]]

1.982

437

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

i.c.

second order series method. Ordinary point, second order series method. Taylor series method

[[_2nd_order, _with_linear_symmetries]]

3.364

438

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

second order series method. Ordinary point, second order series method. Taylor series method

[[_2nd_order, _with_linear_symmetries]]

0.891

439

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

second order series method. Ordinary point, second order series method. Taylor series method

[[_2nd_order, _with_linear_symmetries]]

1.466

440

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

second order series method. Ordinary point, second order series method. Taylor series method

[[_2nd_order, _with_linear_symmetries]]

1.107

441

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

second order series method. Ordinary point, second order series method. Taylor series method

[[_2nd_order, _with_linear_symmetries]]

1.071

442

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

i.c.

second order series method. Ordinary point, second order series method. Taylor series method

[[_2nd_order, _with_linear_symmetries]]

2.634

443

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

second order series method. Ordinary point, second order series method. Taylor series method

[[_2nd_order, _with_linear_symmetries]]

1.036

444

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

second order series method. Ordinary point, second order series method. Taylor series method

[[_2nd_order, _with_linear_symmetries]]

1.58

445

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

second order series method. Ordinary point, second order series method. Taylor series method

[_Lienard]

5.636

446

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

second order series method. Ordinary point, second order series method. Taylor series method

[[_2nd_order, _with_linear_symmetries]]

1.105

447

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

second order series method. Ordinary point, second order series method. Taylor series method

[[_Emden, _Fowler]]

0.616

448

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

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[[_linear, ‘class A‘]]

0.925

449

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

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[[_linear, ‘class A‘]]

0.835

450

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

exact, linear, first_order_ode_lie_symmetry_lookup

[[_linear, ‘class A‘]]

0.87

451

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

exact, linear, first_order_ode_lie_symmetry_lookup

[_linear]

1.093

452

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

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[[_linear, ‘class A‘]]

0.859

453

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

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[_linear]

1.026

454

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

exact, linear, first_order_ode_lie_symmetry_lookup

[_linear]

0.909

455

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

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[_linear]

1.116

456

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

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[[_linear, ‘class A‘]]

0.829

457

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

linear, homogeneousTypeD2, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[_linear]

0.972

458

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

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[[_linear, ‘class A‘]]

1.095

459

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

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[[_linear, ‘class A‘]]

0.847

460

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

i.c.

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[[_linear, ‘class A‘]]

1.323

461

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

i.c.

exact, linear, first_order_ode_lie_symmetry_lookup

[[_linear, ‘class A‘]]

1.334

462

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

i.c.

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[_linear]

1.304

463

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

i.c.

exact, linear, first_order_ode_lie_symmetry_lookup

[_linear]

1.337

464

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

i.c.

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[[_linear, ‘class A‘]]

1.156

465

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

i.c.

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[_linear]

1.485

466

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

i.c.

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[_linear]

1.281

467

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

i.c.

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[_linear]

1.574

468

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

i.c.

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[[_linear, ‘class A‘]]

1.368

469

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

i.c.

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[[_linear, ‘class A‘]]

1.177

470

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

i.c.

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[[_linear, ‘class A‘]]

1.498

471

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

i.c.

exact, linear, first_order_ode_lie_symmetry_lookup

[_linear]

1.252

472

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

i.c.

exact, linear, first_order_ode_lie_symmetry_lookup

[_linear]

1.239

473

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

i.c.

exact, linear, first_order_ode_lie_symmetry_lookup

[_linear]

33.713

474

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

i.c.

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[[_linear, ‘class A‘]]

1.518

475

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

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[[_linear, ‘class A‘]]

0.88

476

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

i.c.

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[[_linear, ‘class A‘]]

1.701

477

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

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[[_linear, ‘class A‘]]

1.127

478

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

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[[_linear, ‘class A‘]]

1.044

479

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

exact, separable, differentialType, first_order_ode_lie_symmetry_lookup

[_separable]

1.209

480

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

exact, separable, first_order_ode_lie_symmetry_lookup

[_separable]

1.006

481

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

exact, riccati, separable, first_order_ode_lie_symmetry_lookup

[_separable]

0.796

482

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

exact, separable, differentialType, first_order_ode_lie_symmetry_lookup

[_separable]

1.528

483

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

exact, separable, first_order_ode_lie_symmetry_lookup

[_separable]

1.35

484

\[ {}x y^{\prime } = \sqrt {1-y^{2}} \]

exact, separable, first_order_ode_lie_symmetry_lookup

[_separable]

1.28

485

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

unknown

[‘y=_G(x,y’)‘]

N/A

1.497

486

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

exact, separable, differentialType, first_order_ode_lie_symmetry_lookup

[_separable]

154.618

487

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

i.c.

exact, riccati, separable, first_order_ode_lie_symmetry_lookup

[_separable]

1.166

488

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

i.c.

exact, separable, differentialType, homogeneousTypeMapleC, first_order_ode_lie_symmetry_lookup

[_separable]

6.71

489

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

i.c.

exact, separable, first_order_ode_lie_symmetry_lookup

[_separable]

1.847

490

\[ {}r^{\prime } = \frac {r^{2}}{x} \]

i.c.

exact, riccati, separable, first_order_ode_lie_symmetry_lookup

[_separable]

1.269

491

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

i.c.

exact, separable, first_order_ode_lie_symmetry_lookup

[_separable]

1.673

492

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

i.c.

exact, riccati, separable, first_order_ode_lie_symmetry_lookup

[_separable]

1.391

493

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

i.c.

exact, separable, differentialType, homogeneousTypeMapleC, first_order_ode_lie_symmetry_lookup

[_separable]

6.693

494

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

i.c.

exact, separable, differentialType, first_order_ode_lie_symmetry_lookup

[_separable]

3.85

495

\[ {}y^{\prime } = \frac {-{\mathrm e}^{x}+3 x^{2}}{-5+2 y} \]

i.c.

exact, separable, first_order_ode_lie_symmetry_lookup

[_separable]

1.863

496

\[ {}y^{\prime } = \frac {{\mathrm e}^{-x}-{\mathrm e}^{x}}{3+4 y} \]

i.c.

exact, separable, first_order_ode_lie_symmetry_lookup

[_separable]

2.872

497

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

i.c.

exact, separable, first_order_ode_lie_symmetry_lookup

[_separable]

10.198

498

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

i.c.

exact, separable, first_order_ode_lie_symmetry_lookup

[_separable]

3.728

499

\[ {}y^{\prime } = \frac {3 x^{2}+1}{-6 y+3 y^{2}} \]

i.c.

exact, separable, differentialType, first_order_ode_lie_symmetry_lookup

[_separable]

3.06

500

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

i.c.

exact, separable, differentialType, first_order_ode_lie_symmetry_lookup

[_separable]

78.154