2.2.158 Problems 15701 to 15800

Table 2.317: Main lookup table. Sorted sequentially by problem number.

#

ODE

CAS classification

Solved?

time (sec)

15701

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

[[_2nd_order, _exact, _linear, _homogeneous]]

0.713

15702

\[ {}\left (x -1\right )^{2} y^{\prime \prime }-5 \left (x -1\right ) y^{\prime }+9 y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

0.638

15703

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

[[_2nd_order, _missing_y]]

0.539

15704

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

[[_2nd_order, _with_linear_symmetries]]

0.668

15705

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

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

0.648

15706

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

[[_2nd_order, _with_linear_symmetries]]

1.119

15707

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

[[_Emden, _Fowler]]

0.731

15708

\[ {}\left (-x^{4}+x^{3}\right ) y^{\prime \prime }+\left (3 x -1\right ) y^{\prime }+827 y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

1.572

15709

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

[[_2nd_order, _with_linear_symmetries]]

0.819

15710

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

[[_2nd_order, _with_linear_symmetries]]

1.211

15711

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

[[_2nd_order, _with_linear_symmetries]]

0.802

15712

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

[[_2nd_order, _with_linear_symmetries]]

1.484

15713

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

[[_Emden, _Fowler]]

0.612

15714

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

[[_2nd_order, _with_linear_symmetries]]

0.802

15715

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

[[_2nd_order, _with_linear_symmetries]]

0.842

15716

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

[[_2nd_order, _with_linear_symmetries]]

1.236

15717

\[ {}\left (-9 x^{4}+x^{2}\right ) y^{\prime \prime }-6 y^{\prime } x +10 y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

0.875

15718

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

[[_2nd_order, _with_linear_symmetries]]

0.822

15719

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

[_Lienard]

0.657

15720

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

[_Bessel]

1.148

15721

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

[[_2nd_order, _with_linear_symmetries]]

0.862

15722

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

[[_2nd_order, _with_linear_symmetries]]

0.826

15723

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

[[_2nd_order, _with_linear_symmetries]]

0.908

15724

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

[_Laguerre]

1.209

15725

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

[[_2nd_order, _with_linear_symmetries]]

0.823

15726

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

[[_2nd_order, _with_linear_symmetries]]

0.656

15727

\[ {}\left (9 x^{3}+9 x^{2}\right ) y^{\prime \prime }+\left (27 x^{2}+9 x \right ) y^{\prime }+\left (8 x -1\right ) y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

0.812

15728

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

[[_2nd_order, _exact, _linear, _homogeneous]]

1.176

15729

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

[[_2nd_order, _with_linear_symmetries]]

0.757

15730

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

[[_2nd_order, _with_linear_symmetries]]

0.829

15731

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

[[_2nd_order, _with_linear_symmetries]]

0.951

15732

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

[[_2nd_order, _with_linear_symmetries]]

0.856

15733

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

[[_2nd_order, _with_linear_symmetries]]

0.918

15734

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

[_Lienard]

0.584

15735

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

[[_2nd_order, _with_linear_symmetries]]

1.031

15736

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

[[_2nd_order, _with_linear_symmetries]]

0.892

15737

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

[[_2nd_order, _with_linear_symmetries]]

1.328

15738

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

[[_2nd_order, _with_linear_symmetries]]

0.870

15739

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

[[_2nd_order, _with_linear_symmetries]]

1.191

15740

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

[[_2nd_order, _with_linear_symmetries]]

1.011

15741

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

[[_2nd_order, _with_linear_symmetries]]

0.982

15742

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

[[_2nd_order, _exact, _linear, _homogeneous]]

1.169

15743

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

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

0.961

15744

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

[[_2nd_order, _with_linear_symmetries]]

0.786

15745

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

[_Lienard]

0.648

15746

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

[_Laguerre]

1.219

15747

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

[[_2nd_order, _with_linear_symmetries]]

1.313

15748

\[ {}\left [\begin {array}{c} x^{\prime }=2 y \\ y^{\prime }=1-2 x \end {array}\right ] \]

system_of_ODEs

0.640

15749

\[ {}\left [\begin {array}{c} x^{\prime }=4 x-3 y \\ y^{\prime }=6 x-7 y \end {array}\right ] \]

system_of_ODEs

0.434

15750

\[ {}\left [\begin {array}{c} t x^{\prime }+2 x=15 y \\ y^{\prime } t =x \end {array}\right ] \]

system_of_ODEs

0.059

15751

\[ {}\left [\begin {array}{c} x^{\prime }=x+2 y \\ y^{\prime }=5 x-2 y \end {array}\right ] \]
i.c.

system_of_ODEs

0.618

15752

\[ {}\left [\begin {array}{c} x^{\prime }=5 x+4 y \\ y^{\prime }=8 x+y \end {array}\right ] \]
i.c.

system_of_ODEs

0.550

15753

\[ {}\left [\begin {array}{c} x^{\prime }=4 x+2 y \\ y^{\prime }=3 x-y \end {array}\right ] \]
i.c.

system_of_ODEs

0.626

15754

\[ {}\left [\begin {array}{c} x^{\prime }=x+2 y \\ y^{\prime }=5 x-2 y \end {array}\right ] \]
i.c.

system_of_ODEs

0.621

15755

\[ {}\left [\begin {array}{c} x^{\prime }=2 y \\ y^{\prime }=2 x \end {array}\right ] \]

system_of_ODEs

0.401

15756

\[ {}\left [\begin {array}{c} x^{\prime }=2 y \\ y^{\prime }=-2 x \end {array}\right ] \]

system_of_ODEs

0.429

15757

\[ {}\left [\begin {array}{c} x^{\prime }=-2 y \\ y^{\prime }=8 x \end {array}\right ] \]

system_of_ODEs

0.469

15758

\[ {}\left [\begin {array}{c} x^{\prime }=4 x-13 y \\ y^{\prime }=x \end {array}\right ] \]
i.c.

system_of_ODEs

0.612

15759

\[ {}\left [\begin {array}{c} x^{\prime }=3 x+2 y \\ y^{\prime }=-2 x+3 y \end {array}\right ] \]
i.c.

system_of_ODEs

0.524

15760

\[ {}\left [\begin {array}{c} x^{\prime }=8 x+2 y-17 \\ y^{\prime }=4 x+y-13 \end {array}\right ] \]
i.c.

system_of_ODEs

0.700

15761

\[ {}\left [\begin {array}{c} x^{\prime }=8 x+2 y+7 \,{\mathrm e}^{2 t} \\ y^{\prime }=4 x+y-7 \,{\mathrm e}^{2 t} \end {array}\right ] \]
i.c.

system_of_ODEs

0.580

15762

\[ {}\left [\begin {array}{c} x^{\prime }=4 x+3 y-6 \,{\mathrm e}^{3 t} \\ y^{\prime }=x+6 y+2 \,{\mathrm e}^{3 t} \end {array}\right ] \]
i.c.

system_of_ODEs

0.592

15763

\[ {}\left [\begin {array}{c} x^{\prime }=-y \\ y^{\prime }=4 x+24 t \end {array}\right ] \]
i.c.

system_of_ODEs

0.590

15764

\[ {}\left [\begin {array}{c} x^{\prime }=4 x-13 y \\ y^{\prime }=x+19 \cos \left (4 t \right )-13 \sin \left (4 t \right ) \end {array}\right ] \]
i.c.

system_of_ODEs

1.474

15765

\[ {}\left [\begin {array}{c} x^{\prime }=4 x+3 y+5 \operatorname {Heaviside}\left (t -2\right ) \\ y^{\prime }=x+6 y+17 \operatorname {Heaviside}\left (t -2\right ) \end {array}\right ] \]
i.c.

system_of_ODEs

0.694

15766

\[ {}\left [\begin {array}{c} x^{\prime }=5 x+4 y \\ y^{\prime }=8 x+y \end {array}\right ] \]

system_of_ODEs

0.425

15767

\[ {}\left [\begin {array}{c} x^{\prime }=2 x-5 y \\ y^{\prime }=3 x-7 y \end {array}\right ] \]

system_of_ODEs

0.634

15768

\[ {}\left [\begin {array}{c} x^{\prime }=2 x-5 y+4 \\ y^{\prime }=3 x-7 y+5 \end {array}\right ] \]

system_of_ODEs

0.889

15769

\[ {}\left [\begin {array}{c} x^{\prime }=3 x+y \\ y^{\prime }=6 x+2 y \end {array}\right ] \]

system_of_ODEs

0.428

15770

\[ {}\left [\begin {array}{c} x^{\prime }=x y-6 y \\ y^{\prime }=x-y-5 \end {array}\right ] \]

system_of_ODEs

0.054

15771

\[ {}\left [\begin {array}{c} x^{\prime }=-x+2 y \\ y^{\prime }=2 x-y \end {array}\right ] \]

system_of_ODEs

0.399

15772

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

[[_2nd_order, _linear, _nonhomogeneous]]

1.410

15773

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

[‘y=_G(x,y’)‘]

2.841

15774

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

[[_3rd_order, _with_linear_symmetries]]

0.176

15775

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

[_quadrature]

0.553

15776

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

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

1.506

15777

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

[[_2nd_order, _with_linear_symmetries]]

0.115

15778

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

[NONE]

0.784

15779

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

[_quadrature]

0.471

15780

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

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

4.737

15781

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

[_quadrature]

1.387

15782

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

[_separable]

1.593

15783

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

[[_linear, ‘class A‘]]

1.342

15784

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

[[_2nd_order, _missing_x]]

1.091

15785

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

[[_2nd_order, _missing_x]]

2.015

15786

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

[[_2nd_order, _missing_x]]

1.348

15787

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

[[_2nd_order, _linear, _nonhomogeneous]]

3.617

15788

\[ {}y^{\prime \prime }-12 y^{\prime }+40 y = 0 \]

[[_2nd_order, _missing_x]]

2.736

15789

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

[[_3rd_order, _missing_x]]

0.071

15790

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

[[_3rd_order, _missing_x]]

0.072

15791

\[ {}x^{2} y^{\prime \prime }-12 y^{\prime } x +42 y = 0 \]

[[_Emden, _Fowler]]

1.102

15792

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

[[_Emden, _Fowler]]

4.194

15793

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

[_separable]

3.480

15794

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

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

2.082

15795

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

[_linear]

2.470

15796

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

[_exact, [_1st_order, ‘_with_symmetry_[F(x),G(y)]‘], [_Abel, ‘2nd type‘, ‘class A‘]]

1.985

15797

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

[_exact]

5.011

15798

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

[_quadrature]

0.538

15799

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

[_quadrature]

0.559

15800

\[ {}y^{\prime } = \frac {x}{\sqrt {x^{2}-16}} \]

[_quadrature]

0.246