2.16.46 Problems 4501 to 4600

Table 2.108: Main lookup table. Sorted sequentially by problem number.

#

ODE

Program classification

CAS classification

Solved?

Verified?

time (sec)

4501

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

bernoulli

[_Bernoulli]

0.512

4502

\[ {}\left (-x^{3}+1\right ) y^{\prime }-2 \left (1+x \right ) y = y^{\frac {5}{2}} \]

bernoulli

[_rational, _Bernoulli]

19.07

4503

\[ {}\tan \left (\theta \right ) r^{\prime }-r = \tan \left (\theta \right )^{2} \]

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[_linear]

1.508

4504

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

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[[_linear, ‘class A‘]]

0.737

4505

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

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[[_linear, ‘class A‘]]

0.778

4506

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

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[[_linear, ‘class A‘]]

0.939

4507

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

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[_linear]

1.483

4508

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

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[_linear]

1.425

4509

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

exact, linear, first_order_ode_lie_symmetry_lookup

[_linear]

0.918

4510

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

linear, homogeneousTypeD2, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[_linear]

1.083

4511

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

riccati, bernoulli, homogeneousTypeD2, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

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

0.94

4512

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

riccati, bernoulli, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[_Bernoulli]

1.199

4513

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

riccati, bernoulli, homogeneousTypeD2, first_order_ode_lie_symmetry_lookup

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

1.212

4514

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

i.c.

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[[_linear, ‘class A‘]]

0.975

4515

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

i.c.

exact, riccati, bernoulli, separable, first_order_ode_lie_symmetry_lookup

[_separable]

2.67

4516

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

i.c.

bernoulli, first_order_ode_lie_symmetry_lookup

[_Bernoulli]

7.613

4517

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

i.c.

exactWithIntegrationFactor

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

12.745

4518

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

riccati

[_rational, _Riccati]

1.318

4519

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

riccati

[_Riccati]

3.563

4520

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

riccati, exactWithIntegrationFactor, first_order_ode_lie_symmetry_calculated

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

2.769

4521

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

riccati, homogeneousTypeD2, first_order_ode_lie_symmetry_calculated

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

3.303

4522

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

bernoulli, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[_Bernoulli]

1.655

4523

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

exactWithIntegrationFactor

[‘y=_G(x,y’)‘]

1.981

4524

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

first_order_ode_lie_symmetry_calculated

[[_1st_order, _with_linear_symmetries]]

3.615

4525

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

exactWithIntegrationFactor, first_order_ode_lie_symmetry_calculated

[[_homogeneous, ‘class C‘], _dAlembert]

1.761

4526

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

exact, separable, first_order_ode_lie_symmetry_lookup

[_separable]

32.585

4527

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

first_order_ode_lie_symmetry_calculated

[[_homogeneous, ‘class C‘], _dAlembert]

2.873

4528

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

first_order_ode_lie_symmetry_calculated

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

4.292

4529

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

exact, differentialType, homogeneousTypeMapleC, first_order_ode_lie_symmetry_calculated

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

5.098

4530

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

homogeneousTypeD2, exactWithIntegrationFactor, first_order_ode_lie_symmetry_calculated

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

3.274

4531

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

first_order_ode_lie_symmetry_calculated

[[_1st_order, _with_linear_symmetries]]

1.566

4532

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

riccati, bernoulli, first_order_ode_lie_symmetry_lookup

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

0.845

4533

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

exact

[_exact]

4.291

4534

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

first_order_ode_lie_symmetry_calculated

[[_1st_order, _with_linear_symmetries]]

2.453

4535

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

riccati, bernoulli, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[_Bernoulli]

1.166

4536

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

exact, linear, separable, homogeneousTypeD2, first_order_ode_lie_symmetry_lookup

[_separable]

1.997

4537

\[ {}y^{\prime }+a y = k \,{\mathrm e}^{b x} \]

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[[_linear, ‘class A‘]]

1.028

4538

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

riccati, homogeneousTypeC, first_order_ode_lie_symmetry_lookup

[[_homogeneous, ‘class C‘], _Riccati]

0.852

4539

\[ {}y^{\prime }+8 x^{3} y^{3}+2 x y = 0 \]

bernoulli, first_order_ode_lie_symmetry_lookup

[_Bernoulli]

0.96

4540

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

unknown

[NONE]

N/A

2.7

4541

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

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[[_linear, ‘class A‘]]

1.237

4542

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

exact, riccati, separable, first_order_ode_lie_symmetry_lookup

[_separable]

1.028

4543

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

exactWithIntegrationFactor

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

2.471

4544

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

homogeneousTypeD2, first_order_ode_lie_symmetry_calculated

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

1.658

4545

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

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[_linear]

1.011

4546

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

exactWithIntegrationFactor, first_order_ode_lie_symmetry_calculated

[[_homogeneous, ‘class G‘]]

3.353

4547

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

riccati, bernoulli, homogeneousTypeD2, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

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

1.043

4548

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

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[_linear]

1.145

4549

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

homogeneousTypeD, homogeneousTypeD2, first_order_ode_lie_symmetry_lookup

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

1.015

4550

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

homogeneousTypeD2, exactWithIntegrationFactor, first_order_ode_lie_symmetry_calculated

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

3.047

4551

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

exact

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

1.602

4552

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

riccati, homogeneousTypeD2, first_order_ode_lie_symmetry_calculated

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

1.434

4553

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

exact, linear, first_order_ode_lie_symmetry_lookup

[_linear]

2.146

4554

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

exact

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

1.329

4555

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

exact, riccati, bernoulli, separable, first_order_ode_lie_symmetry_lookup

[_separable]

6.486

4556

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

exact, separable, first_order_ode_lie_symmetry_lookup

[_separable]

4.984

4557

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

exact, differentialType

[_exact, _rational]

14.271

4558

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

linear, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

[_linear]

3.275

4559

\[ {}y^{2}+12 x^{2} y+\left (2 x y+4 x^{3}\right ) y^{\prime } = 0 \]

exact, first_order_ode_lie_symmetry_calculated

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

3.901

4560

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

exactWithIntegrationFactor

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

1.16

4561

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

exactWithIntegrationFactor, first_order_ode_lie_symmetry_calculated

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

3.718

4562

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

bernoulli, homogeneousTypeD2, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

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

2.011

4563

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

bernoulli, homogeneousTypeD2, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

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

1.442

4564

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

homogeneousTypeD2, exactWithIntegrationFactor, first_order_ode_lie_symmetry_calculated

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

10.768

4565

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

exactWithIntegrationFactor, first_order_ode_lie_symmetry_calculated

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

1.541

4566

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

exact, differentialType, homogeneousTypeD2, first_order_ode_lie_symmetry_calculated

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

12.457

4567

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

exact, bernoulli, first_order_ode_lie_symmetry_lookup

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

1.956

4568

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

homogeneousTypeD2, first_order_ode_lie_symmetry_calculated

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

6.738

4569

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

exactByInspection

[_rational]

1.994

4570

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

exact, separable, differentialType, first_order_ode_lie_symmetry_lookup

[_separable]

4.438

4571

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

exact, separable, first order special form ID 1, first_order_ode_lie_symmetry_lookup

[_separable]

3.698

4572

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

kovacic, exact linear second order ode, second_order_integrable_as_is, second_order_ode_missing_y, second_order_linear_constant_coeff

[[_2nd_order, _missing_x]]

1.281

4573

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

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _missing_x]]

0.269

4574

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

kovacic, second_order_linear_constant_coeff, second_order_ode_can_be_made_integrable

[[_2nd_order, _missing_x]]

1.059

4575

\[ {}6 y^{\prime \prime }-11 y^{\prime }+4 y = 0 \]

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _missing_x]]

0.289

4576

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

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _missing_x]]

0.334

4577

\[ {}y^{\prime \prime \prime }+y^{\prime \prime }-10 y^{\prime }-6 y = 0 \]

higher_order_linear_constant_coefficients_ODE

[[_3rd_order, _missing_x]]

0.351

4578

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

higher_order_linear_constant_coefficients_ODE

[[_high_order, _missing_x]]

0.291

4579

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

higher_order_linear_constant_coefficients_ODE

[[_high_order, _missing_x]]

0.482

4580

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

higher_order_linear_constant_coefficients_ODE

[[_high_order, _missing_x]]

0.123

4581

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

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _missing_x]]

0.387

4582

\[ {}y^{\prime \prime }+4 k y^{\prime }-12 k^{2} y = 0 \]

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _missing_x]]

0.437

4583

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

higher_order_linear_constant_coefficients_ODE

[[_high_order, _quadrature]]

0.188

4584

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

kovacic, second_order_linear_constant_coeff, linear_second_order_ode_solved_by_an_integrating_factor

[[_2nd_order, _missing_x]]

0.344

4585

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

higher_order_linear_constant_coefficients_ODE

[[_3rd_order, _missing_x]]

0.312

4586

\[ {}y^{\prime \prime \prime }-6 y^{\prime \prime }+12 y^{\prime }-8 y = 0 \]

higher_order_linear_constant_coefficients_ODE

[[_3rd_order, _missing_x]]

0.105

4587

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

kovacic, second_order_linear_constant_coeff, linear_second_order_ode_solved_by_an_integrating_factor

[[_2nd_order, _missing_x]]

0.34

4588

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

higher_order_linear_constant_coefficients_ODE

[[_high_order, _missing_x]]

0.228

4589

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

higher_order_linear_constant_coefficients_ODE

[[_high_order, _missing_x]]

0.304

4590

\[ {}y^{\prime \prime \prime \prime }+2 y^{\prime \prime \prime }-11 y^{\prime \prime }-12 y^{\prime }+36 y = 0 \]

higher_order_linear_constant_coefficients_ODE

[[_high_order, _missing_x]]

0.394

4591

\[ {}36 y^{\prime \prime \prime \prime }-37 y^{\prime \prime }+4 y^{\prime }+5 y = 0 \]

higher_order_linear_constant_coefficients_ODE

[[_high_order, _missing_x]]

0.322

4592

\[ {}y^{\prime \prime \prime \prime }-8 y^{\prime \prime }+36 y = 0 \]

higher_order_linear_constant_coefficients_ODE

[[_high_order, _missing_x]]

1.421

4593

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

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _missing_x]]

0.697

4594

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

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _missing_x]]

0.815

4595

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

higher_order_linear_constant_coefficients_ODE

[[_high_order, _missing_x]]

0.501

4596

\[ {}y^{\prime \prime }-4 y^{\prime }+20 y = 0 \]

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _missing_x]]

0.702

4597

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

higher_order_linear_constant_coefficients_ODE

[[_high_order, _missing_x]]

0.132

4598

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

higher_order_linear_constant_coefficients_ODE

[[_3rd_order, _missing_x]]

0.583

4599

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

higher_order_linear_constant_coefficients_ODE

[[_high_order, _missing_x]]

0.363

4600

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

higher_order_linear_constant_coefficients_ODE

[[_high_order, _missing_x]]

0.151