2.2.39 Problems 3801 to 3900

Table 2.79: Main lookup table. Sorted sequentially by problem number.

#

ODE

CAS classification

Solved?

time (sec)

3801

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

[[_2nd_order, _missing_x]]

0.375

3802

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

[_erf]

0.500

3803

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

[[_2nd_order, _exact, _linear, _homogeneous]]

0.405

3804

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

[[_2nd_order, _exact, _linear, _homogeneous]]

3.385

3805

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

[[_Emden, _Fowler]]

0.323

3806

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

[[_2nd_order, _with_linear_symmetries]]

0.466

3807

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

[[_2nd_order, _with_linear_symmetries]]

0.454

3808

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

[[_2nd_order, _with_linear_symmetries]]

0.461

3809

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

[[_2nd_order, _exact, _linear, _homogeneous]]

0.586

3810

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

[[_2nd_order, _exact, _linear, _homogeneous]]

0.520

3811

\[ {}\left (-4 x^{2}+1\right ) y^{\prime \prime }-20 y^{\prime } x -16 y = 0 \]

[_Gegenbauer]

0.592

3812

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

[_Gegenbauer]

0.395

3813

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

[[_2nd_order, _with_linear_symmetries]]

0.573

3814

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

[[_2nd_order, _with_linear_symmetries]]

0.593

3815

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

[[_2nd_order, _with_linear_symmetries]]

0.681

3816

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

[[_2nd_order, _with_linear_symmetries]]

0.792

3817

\[ {}\left (2 x^{2}+1\right ) y^{\prime \prime }+7 y^{\prime } x +2 y = 0 \]
i.c.

[[_2nd_order, _with_linear_symmetries]]

0.513

3818

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

[_Lienard]

0.360

3819

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

[[_2nd_order, _linear, _nonhomogeneous]]

0.523

3820

\[ {}y^{\prime \prime }+y^{\prime } x -4 y = 6 \,{\mathrm e}^{x} \]

[[_2nd_order, _linear, _nonhomogeneous]]

0.479

3821

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

[[_2nd_order, _with_linear_symmetries]]

0.602

3822

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

[[_2nd_order, _with_linear_symmetries]]

0.648

3823

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

[[_2nd_order, _with_linear_symmetries]]

3.609

3824

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

[[_2nd_order, _with_linear_symmetries]]

0.157

3825

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

[[_2nd_order, _with_linear_symmetries]]

1.020

3826

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

[[_Emden, _Fowler]]

1.111

3827

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

[[_2nd_order, _with_linear_symmetries]]

5.574

3828

\[ {}x^{2} y^{\prime \prime }-x \cos \left (x \right ) y^{\prime }+5 \,{\mathrm e}^{2 x} y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

0.988

3829

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

[[_Emden, _Fowler]]

0.852

3830

\[ {}6 x^{2} y^{\prime \prime }+x \left (1+18 x \right ) y^{\prime }+\left (1+12 x \right ) y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

0.850

3831

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

[[_2nd_order, _with_linear_symmetries]]

0.971

3832

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

[[_2nd_order, _with_linear_symmetries]]

3.598

3833

\[ {}3 x^{2} y^{\prime \prime }-x \left (x +8\right ) y^{\prime }+6 y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

0.845

3834

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

[[_2nd_order, _with_linear_symmetries]]

0.875

3835

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

[[_2nd_order, _with_linear_symmetries]]

1.027

3836

\[ {}3 x^{2} y^{\prime \prime }+x \left (7+3 x \right ) y^{\prime }+\left (1+6 x \right ) y = 0 \]

[[_2nd_order, _exact, _linear, _homogeneous]]

0.823

3837

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

[[_2nd_order, _with_linear_symmetries]]

0.658

3838

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

[[_2nd_order, _with_linear_symmetries]]

3.814

3839

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

[[_2nd_order, _with_linear_symmetries]]

0.767

3840

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

[[_2nd_order, _with_linear_symmetries]]

0.724

3841

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

[[_2nd_order, _with_linear_symmetries]]

0.767

3842

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

[[_2nd_order, _with_linear_symmetries]]

0.701

3843

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

[[_2nd_order, _with_linear_symmetries]]

2.604

3844

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

[[_2nd_order, _with_linear_symmetries]]

3.306

3845

\[ {}x^{2} y^{\prime \prime }-\left (2 \sqrt {5}-1\right ) x y^{\prime }+\left (\frac {19}{4}-3 x^{2}\right ) y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

1.164

3846

\[ {}x^{2} y^{\prime \prime }+\left (-2 x^{5}+9 x \right ) y^{\prime }+\left (10 x^{4}+5 x^{2}+25\right ) y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

0.797

3847

\[ {}x^{2} y^{\prime \prime }+\left (4 x +\frac {1}{2} x^{2}-\frac {1}{3} x^{3}\right ) y^{\prime }-\frac {7 y}{4} = 0 \]

[[_2nd_order, _with_linear_symmetries]]

5.807

3848

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

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

2.588

3849

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

[[_2nd_order, _with_linear_symmetries]]

0.668

3850

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

[[_2nd_order, _with_linear_symmetries]]

0.728

3851

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

[[_2nd_order, _with_linear_symmetries]]

1.168

3852

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

[[_2nd_order, _with_linear_symmetries]]

0.792

3853

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

[[_2nd_order, _with_linear_symmetries]]

0.867

3854

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

[[_2nd_order, _with_linear_symmetries]]

2.704

3855

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

[[_2nd_order, _with_linear_symmetries]]

5.966

3856

\[ {}x^{2} \left (x^{2}+1\right ) y^{\prime \prime }+7 x \,{\mathrm e}^{x} y^{\prime }+9 \left (1+\tan \left (x \right )\right ) y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

2.210

3857

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

[[_2nd_order, _with_linear_symmetries]]

1.283

3858

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

[[_2nd_order, _with_linear_symmetries]]

0.818

3859

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

[[_Emden, _Fowler]]

3.047

3860

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

[[_2nd_order, _with_linear_symmetries]]

0.873

3861

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

[[_2nd_order, _with_linear_symmetries]]

0.846

3862

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

[[_2nd_order, _with_linear_symmetries]]

19.062

3863

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

[[_Emden, _Fowler]]

0.736

3864

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

[[_2nd_order, _with_linear_symmetries]]

2.753

3865

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

[[_2nd_order, _with_linear_symmetries]]

0.692

3866

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

[[_2nd_order, _with_linear_symmetries]]

0.865

3867

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

[[_2nd_order, _with_linear_symmetries]]

6.937

3868

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

[[_2nd_order, _with_linear_symmetries]]

0.740

3869

\[ {}4 x^{2} y^{\prime \prime }+4 x \left (1-x \right ) y^{\prime }+\left (2 x -9\right ) y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

0.902

3870

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

[[_2nd_order, _with_linear_symmetries]]

2.974

3871

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

[[_2nd_order, _with_linear_symmetries]]

0.700

3872

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

[[_2nd_order, _with_linear_symmetries]]

4.919

3873

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

[[_2nd_order, _with_linear_symmetries]]

2.809

3874

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

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

2.757

3875

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

[[_2nd_order, _with_linear_symmetries]]

2.866

3876

\[ {}x^{2} y^{\prime \prime }+y^{\prime } x +\left (x^{2}-\frac {9}{4}\right ) y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

4.834

3877

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

[_Lienard]

2.739

3878

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

[[_Emden, _Fowler]]

0.306

3879

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

[[_Emden, _Fowler]]

0.329

3880

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

[[_2nd_order, _exact, _linear, _homogeneous]]

0.541

3881

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

[[_Emden, _Fowler]]

0.764

3882

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

[_Lienard]

0.718

3883

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

[[_2nd_order, _with_linear_symmetries]]

5.096

3884

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

[_Lienard]

0.563

3885

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

[[_2nd_order, _exact, _linear, _homogeneous]]

0.447

3886

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

[[_2nd_order, _with_linear_symmetries]]

0.766

3887

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

[[_Emden, _Fowler]]

0.895

3888

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

[[_2nd_order, _with_linear_symmetries]]

0.875

3889

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

[[_2nd_order, _with_linear_symmetries]]

7.207

3890

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

[[_2nd_order, _with_linear_symmetries]]

0.737

3891

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

[[_2nd_order, _with_linear_symmetries]]

2.648

3892

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

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

2.471

3893

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

[[_1st_order, _with_exponential_symmetries]]

7.567

3894

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

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

1.684

3895

\[ {}4 x y^{2}+6 y+\left (5 x^{2} y+8 x \right ) y^{\prime } = 0 \]

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

11.390

3896

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

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

6.603

3897

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

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

7.389

3898

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

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

5.012

3899

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

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

15.507

3900

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

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

29.977