2.2.87 Problems 8601 to 8700

Table 2.175: Main lookup table. Sorted sequentially by problem number.

#

ODE

CAS classification

Solved?

time (sec)

8601

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

[[_2nd_order, _with_linear_symmetries]]

0.908

8602

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

[[_Emden, _Fowler]]

0.776

8603

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

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

0.843

8604

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

[[_Emden, _Fowler]]

0.827

8605

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

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

0.807

8606

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

[[_Emden, _Fowler]]

1.183

8607

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

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

1.155

8608

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

[[_Emden, _Fowler]]

0.736

8609

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

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

1.095

8610

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

[[_Emden, _Fowler]]

1.059

8611

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

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

1.013

8612

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

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

1.171

8613

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

[[_Emden, _Fowler]]

1.132

8614

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

[[_Emden, _Fowler]]

2.015

8615

\[ {}x^{3} y^{\prime \prime \prime }+4 x^{2} y^{\prime \prime }-8 y^{\prime } x +8 y = 0 \]

[[_3rd_order, _with_linear_symmetries]]

0.139

8616

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

[[_2nd_order, _with_linear_symmetries]]

0.941

8617

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

[[_2nd_order, _with_linear_symmetries]]

0.993

8618

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

[[_2nd_order, _with_linear_symmetries]]

0.914

8619

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

[[_2nd_order, _with_linear_symmetries]]

0.825

8620

\[ {}x \left (x +1\right ) y^{\prime \prime }+\left (1+5 x \right ) y^{\prime }+3 y = 0 \]

[[_2nd_order, _exact, _linear, _homogeneous]]

0.872

8621

\[ {}x^{2} y^{\prime \prime }-x \left (1+3 x \right ) y^{\prime }+\left (1-6 x \right ) y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

0.983

8622

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

[[_2nd_order, _with_linear_symmetries]]

0.916

8623

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

[[_2nd_order, _with_linear_symmetries]]

0.897

8624

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

[[_2nd_order, _with_linear_symmetries]]

0.955

8625

\[ {}4 \left (x -4\right )^{2} y^{\prime \prime }+\left (x -4\right ) \left (x -8\right ) y^{\prime }+x y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

1.128

8626

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

[[_2nd_order, _with_linear_symmetries]]

0.916

8627

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

[[_2nd_order, _with_linear_symmetries]]

0.723

8628

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

[[_2nd_order, _with_linear_symmetries]]

0.779

8629

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

[[_2nd_order, _with_linear_symmetries]]

1.025

8630

\[ {}4 x^{2} y^{\prime \prime }+8 x \left (x +1\right ) y^{\prime }+y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

1.047

8631

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

[[_2nd_order, _with_linear_symmetries]]

1.068

8632

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

[[_2nd_order, _exact, _linear, _homogeneous]]

0.921

8633

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

[[_2nd_order, _with_linear_symmetries]]

1.108

8634

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

[[_2nd_order, _with_linear_symmetries]]

1.250

8635

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

[[_2nd_order, _with_linear_symmetries]]

1.098

8636

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

[_Laguerre]

1.052

8637

\[ {}x \left (x +1\right ) y^{\prime \prime }+\left (5+x \right ) y^{\prime }-4 y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

1.140

8638

\[ {}x \left (x +1\right ) y^{\prime \prime }+\left (5+x \right ) y^{\prime }-4 y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

1.257

8639

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

[[_2nd_order, _with_linear_symmetries]]

1.089

8640

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

[[_2nd_order, _exact, _linear, _homogeneous]]

0.995

8641

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

[[_2nd_order, _exact, _linear, _homogeneous]]

1.129

8642

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

[[_2nd_order, _exact, _linear, _homogeneous]]

1.026

8643

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

[[_2nd_order, _with_linear_symmetries]]

1.100

8644

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

[[_2nd_order, _with_linear_symmetries]]

1.036

8645

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

[[_2nd_order, _with_linear_symmetries]]

1.009

8646

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

[[_2nd_order, _with_linear_symmetries]]

1.118

8647

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

[[_2nd_order, _with_linear_symmetries]]

0.896

8648

\[ {}x^{2} \left (4 x -1\right ) y^{\prime \prime }+x \left (1+5 x \right ) y^{\prime }+3 y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

1.226

8649

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

[[_Emden, _Fowler]]

1.265

8650

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

[[_2nd_order, _with_linear_symmetries]]

1.441

8651

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

[[_Emden, _Fowler]]

1.344

8652

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

[[_2nd_order, _with_linear_symmetries]]

1.524

8653

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

[[_2nd_order, _with_linear_symmetries]]

1.520

8654

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

[[_2nd_order, _with_linear_symmetries]]

1.420

8655

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

[_Jacobi]

1.387

8656

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

[_Jacobi]

1.397

8657

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

[_Bessel]

0.897

8658

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

[_Bessel]

1.278

8659

\[ {}x^{2} y^{\prime \prime }-5 y^{\prime } x +\left (8+5 x \right ) y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

1.482

8660

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

[_Laguerre]

1.390

8661

\[ {}9 x^{2} y^{\prime \prime }-15 y^{\prime } x +7 \left (x +1\right ) y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

1.543

8662

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

[[_2nd_order, _with_linear_symmetries]]

1.540

8663

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

[[_2nd_order, _with_linear_symmetries]]

1.060

8664

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

[_Jacobi]

1.274

8665

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

[[_2nd_order, _with_linear_symmetries]]

0.840

8666

\[ {}x^{2} y^{\prime \prime }+x \left (x +1\right ) y^{\prime }-\left (6 x^{2}-3 x +1\right ) y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

1.271

8667

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

[[_2nd_order, _with_linear_symmetries]]

1.291

8668

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

[[_2nd_order, _with_linear_symmetries]]

1.074

8669

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

[[_2nd_order, _with_linear_symmetries]]

0.895

8670

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

[[_2nd_order, _with_linear_symmetries]]

1.092

8671

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

[[_2nd_order, _exact, _linear, _homogeneous]]

1.336

8672

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

[_Laguerre]

1.398

8673

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

[[_2nd_order, _with_linear_symmetries]]

1.105

8674

\[ {}2 x^{2} y^{\prime \prime }-x \left (2 x +7\right ) y^{\prime }+2 \left (5+x \right ) y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

1.121

8675

\[ {}x^{2} \left (x^{2}+1\right ) y^{\prime \prime }+2 x \left (x^{2}+3\right ) y^{\prime }+6 y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

1.035

8676

\[ {}\left (-x^{2}+1\right ) y^{\prime \prime }-10 y^{\prime } x -18 y = 0 \]

[_Gegenbauer]

0.691

8677

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

[[_2nd_order, _with_linear_symmetries]]

1.096

8678

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

[_erf]

0.633

8679

\[ {}x \left (-x^{2}+1\right ) y^{\prime \prime }-\left (x^{2}+7\right ) y^{\prime }+4 x y = 0 \]

[[_2nd_order, _exact, _linear, _homogeneous]]

1.029

8680

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

[[_2nd_order, _with_linear_symmetries]]

1.174

8681

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

[[_2nd_order, _with_linear_symmetries]]

1.127

8682

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

[[_2nd_order, _with_linear_symmetries]]

0.907

8683

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

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

1.098

8684

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

[[_2nd_order, _with_linear_symmetries]]

0.811

8685

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

[[_2nd_order, _with_linear_symmetries]]

1.040

8686

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

[[_2nd_order, _exact, _linear, _homogeneous]]

0.639

8687

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

[[_2nd_order, _with_linear_symmetries]]

1.255

8688

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

[[_2nd_order, _with_linear_symmetries]]

1.077

8689

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

[[_2nd_order, _with_linear_symmetries]]

0.773

8690

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

[[_2nd_order, _with_linear_symmetries]]

1.107

8691

\[ {}x \left (-x^{2}+1\right ) y^{\prime \prime }+5 \left (-x^{2}+1\right ) y^{\prime }-4 x y = 0 \]

[[_2nd_order, _exact, _linear, _homogeneous]]

0.961

8692

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

[[_2nd_order, _exact, _linear, _homogeneous]]

0.991

8693

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

[[_Bessel, _modified]]

1.267

8694

\[ {}x \left (1-2 x \right ) y^{\prime \prime }-2 \left (x +2\right ) y^{\prime }+18 y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

1.116

8695

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

[[_2nd_order, _exact, _linear, _homogeneous]]

0.972

8696

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

[[_2nd_order, _with_linear_symmetries]]

0.915

8697

\[ {}y^{\prime } = \frac {y}{x \ln \left (x \right )} \]

[_separable]

1.595

8698

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

[_separable]

2.767

8699

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

[_linear]

1.678

8700

\[ {}t x^{\prime }+2 x = 4 \,{\mathrm e}^{t} \]

[_linear]

1.299