2.2.176 Problems 17501 to 17600

Table 2.353: Main lookup table. Sorted sequentially by problem number.

#

ODE

CAS classification

Solved?

time (sec)

17501

\[ {}\left [\begin {array}{c} x^{\prime }=-\frac {4 x}{5}+2 y \\ y^{\prime }=-x+\frac {6 y}{5} \end {array}\right ] \]

system_of_ODEs

0.485

17502

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

system_of_ODEs

0.307

17503

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

system_of_ODEs

0.578

17504

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

system_of_ODEs

0.484

17505

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

system_of_ODEs

0.491

17506

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

system_of_ODEs

0.371

17507

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

system_of_ODEs

0.488

17508

\[ {}\left [\begin {array}{c} x^{\prime }=a x+10 y \\ y^{\prime }=-x-4 y \end {array}\right ] \]

system_of_ODEs

0.601

17509

\[ {}\left [\begin {array}{c} x^{\prime }=4 x+a y \\ y^{\prime }=8 x-6 y \end {array}\right ] \]

system_of_ODEs

0.494

17510

\[ {}\left [\begin {array}{c} i^{\prime }=\frac {i}{2}-\frac {v}{8} \\ v^{\prime }=2 i-\frac {v}{2} \end {array}\right ] \]

system_of_ODEs

0.358

17511

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

system_of_ODEs

0.378

17512

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

system_of_ODEs

0.394

17513

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

system_of_ODEs

0.387

17514

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

system_of_ODEs

0.389

17515

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

system_of_ODEs

0.395

17516

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

system_of_ODEs

0.382

17517

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

system_of_ODEs

0.509

17518

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

system_of_ODEs

0.502

17519

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

system_of_ODEs

0.560

17520

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

system_of_ODEs

0.565

17521

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

system_of_ODEs

0.571

17522

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

system_of_ODEs

0.500

17523

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

system_of_ODEs

0.471

17524

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

system_of_ODEs

0.474

17525

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

system_of_ODEs

0.467

17526

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

system_of_ODEs

0.569

17527

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

system_of_ODEs

0.516

17528

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

system_of_ODEs

0.500

17529

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

system_of_ODEs

0.517

17530

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

system_of_ODEs

0.503

17531

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

system_of_ODEs

0.466

17532

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

system_of_ODEs

0.056

17533

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

system_of_ODEs

0.057

17534

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

system_of_ODEs

0.056

17535

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

system_of_ODEs

0.057

17536

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

system_of_ODEs

0.053

17537

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

system_of_ODEs

0.056

17538

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

system_of_ODEs

0.056

17539

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

system_of_ODEs

0.055

17540

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

system_of_ODEs

0.055

17541

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

system_of_ODEs

0.059

17542

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

system_of_ODEs

0.054

17543

\[ {}x^{\prime } = \frac {x \sqrt {6 x-9}}{3} \]
i.c.

[_quadrature]

184.962

17544

\[ {}\left [\begin {array}{c} x^{\prime }=x \left (1-x-y\right ) \\ y^{\prime }=y \left (\frac {3}{4}-y-\frac {x}{2}\right ) \end {array}\right ] \]

system_of_ODEs

0.056

17545

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

[[_Emden, _Fowler]]

0.655

17546

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

[[_2nd_order, _missing_x]]

1.717

17547

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

[_Gegenbauer]

0.951

17548

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

[_Bessel]

0.990

17549

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

[[_2nd_order, _missing_x], _Van_der_Pol]

1.929

17550

\[ {}y^{\prime \prime }-t y = \frac {1}{\pi } \]

unknown

3.172

17551

\[ {}a \,x^{2} y^{\prime \prime }+b x y^{\prime }+c y = d \]

[[_2nd_order, _with_linear_symmetries]]

3.377

17552

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

[[_2nd_order, _missing_x]]

2.210

17553

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

[[_2nd_order, _missing_x]]

2.296

17554

\[ {}y^{\prime \prime }+y^{\prime }+16 y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

3.685

17555

\[ {}y^{\prime \prime }+3 y^{\prime }+4 y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

3.297

17556

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

[[_2nd_order, _missing_x]]

3.368

17557

\[ {}t y^{\prime \prime }+3 y = t \]
i.c.

[[_2nd_order, _with_linear_symmetries]]

1.945

17558

\[ {}\left (t -1\right ) y^{\prime \prime }-3 t y^{\prime }+4 y = \sin \left (t \right ) \]
i.c.

[[_2nd_order, _linear, _nonhomogeneous]]

1.061

17559

\[ {}t \left (t -4\right ) y^{\prime \prime }+3 t y^{\prime }+4 y = 2 \]
i.c.

[[_2nd_order, _with_linear_symmetries]]

14.132

17560

\[ {}y^{\prime \prime }+\cos \left (t \right ) y^{\prime }+3 \ln \left (t \right ) y = 0 \]
i.c.

[[_2nd_order, _with_linear_symmetries]]

1.227

17561

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

[[_2nd_order, _with_linear_symmetries]]

0.526

17562

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

[[_2nd_order, _with_linear_symmetries]]

1.414

17563

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

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

3.664

17564

\[ {}y^{\prime \prime }-\frac {t}{y} = \frac {1}{\pi } \]
i.c.

[NONE]

0.142

17565

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

[[_2nd_order, _exact, _linear, _homogeneous]]

0.835

17566

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

[[_2nd_order, _missing_x], [_2nd_order, _exact, _nonlinear], _Liouville, [_2nd_order, _reducible, _mu_x_y1], [_2nd_order, _reducible, _mu_xy]]

0.400

17567

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

[[_2nd_order, _missing_x]]

2.198

17568

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

[[_2nd_order, _missing_x]]

1.171

17569

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

[[_2nd_order, _with_linear_symmetries]]

1.161

17570

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

[[_2nd_order, _with_linear_symmetries]]

5.971

17571

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

[[_2nd_order, _missing_x]]

1.081

17572

\[ {}a y^{\prime \prime }+b y^{\prime }+c y = 0 \]

[[_2nd_order, _missing_x]]

0.329

17573

\[ {}t^{2} y^{\prime \prime }-4 t y^{\prime }+6 y = 0 \]

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

0.298

17574

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

[[_Emden, _Fowler]]

0.308

17575

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

[[_2nd_order, _exact, _linear, _homogeneous]]

0.305

17576

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

[[_2nd_order, _with_linear_symmetries]]

0.314

17577

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

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

0.382

17578

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

[[_2nd_order, _with_linear_symmetries]]

0.329

17579

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

[[_2nd_order, _with_linear_symmetries]]

0.320

17580

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

[[_2nd_order, _with_linear_symmetries]]

0.378

17581

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

[_Laguerre]

0.386

17582

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

[[_2nd_order, _exact, _linear, _homogeneous]]

0.351

17583

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

[[_2nd_order, _missing_x]]

1.069

17584

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

[[_2nd_order, _missing_x]]

1.059

17585

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

[[_2nd_order, _missing_x]]

1.181

17586

\[ {}9 y^{\prime \prime }+6 y^{\prime }+y = 0 \]

[[_2nd_order, _missing_x]]

1.181

17587

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

[[_2nd_order, _missing_x]]

1.493

17588

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

[[_2nd_order, _missing_x]]

2.189

17589

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

[[_2nd_order, _missing_x]]

1.186

17590

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

[[_2nd_order, _missing_x]]

1.069

17591

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

[[_2nd_order, _missing_x]]

1.091

17592

\[ {}9 y^{\prime \prime }+12 y^{\prime }+4 y = 0 \]

[[_2nd_order, _missing_x]]

1.163

17593

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

[[_2nd_order, _missing_x]]

1.066

17594

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

[[_2nd_order, _missing_x]]

1.497

17595

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

[[_2nd_order, _missing_x]]

1.952

17596

\[ {}4 y^{\prime \prime }-9 y = 0 \]

[[_2nd_order, _missing_x]]

2.407

17597

\[ {}25 y^{\prime \prime }-20 y^{\prime }+4 y = 0 \]

[[_2nd_order, _missing_x]]

1.202

17598

\[ {}y^{\prime \prime }-4 y^{\prime }+16 y = 0 \]

[[_2nd_order, _missing_x]]

2.389

17599

\[ {}y^{\prime \prime }+6 y^{\prime }+13 y = 0 \]

[[_2nd_order, _missing_x]]

1.995

17600

\[ {}y^{\prime \prime }+2 y^{\prime }+\frac {5 y}{4} = 0 \]

[[_2nd_order, _missing_x]]

1.723