2.2.187 Problems 18601 to 18700

Table 2.391: Main lookup table. Sorted sequentially by problem number.

#

ODE

CAS classification

Solved?

Maple

Mma

Sympy

time(sec)

18601

\begin{align*} y^{\prime } x -4 \sqrt {y^{2}-x^{2}}&=y \\ \end{align*}

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

36.488

18602

\begin{align*} y^{\prime }&=\frac {y^{4}+2 x y^{3}-3 y^{2} x^{2}-2 x^{3} y}{2 y^{2} x^{2}-2 x^{3} y-2 x^{4}} \\ \end{align*}

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

121.152

18603

\begin{align*} \left (y+{\mathrm e}^{\frac {x}{y}} x \right ) y^{\prime }&={\mathrm e}^{\frac {x}{y}} y \\ \end{align*}

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

13.146

18604

\begin{align*} y y^{\prime } x&=x^{2}+y^{2} \\ y \left (2\right ) &= 1 \\ \end{align*}

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

17.691

18605

\begin{align*} y^{\prime }&=\frac {x +y}{x -y} \\ y \left (5\right ) &= 8 \\ \end{align*}

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

50.324

18606

\begin{align*} y^{\prime } t +y&=t^{2} y^{2} \\ \end{align*}

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

5.706

18607

\begin{align*} y^{\prime }&=y \left (t y^{3}-1\right ) \\ \end{align*}

[_Bernoulli]

4.865

18608

\begin{align*} y^{\prime }+\frac {3 y}{t}&=t^{2} y^{2} \\ \end{align*}

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

4.900

18609

\begin{align*} t^{2} y^{\prime }+2 t y-y^{3}&=0 \\ \end{align*}

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

22.437

18610

\begin{align*} 5 \left (t^{2}+1\right ) y^{\prime }&=4 t y \left (y^{3}-1\right ) \\ \end{align*}

[_separable]

20.924

18611

\begin{align*} 3 y^{\prime } t +9 y&=2 t y^{{5}/{3}} \\ \end{align*}

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

48.817

18612

\begin{align*} y^{\prime }&=y+\sqrt {y} \\ \end{align*}

[_quadrature]

4.259

18613

\begin{align*} y^{\prime }&=r y-k^{2} y^{2} \\ \end{align*}

[_quadrature]

11.635

18614

\begin{align*} y^{\prime }&=a y+b y^{3} \\ \end{align*}

[_quadrature]

17.718

18615

\begin{align*} y^{\prime }+3 t y&=4-4 t^{2}+y^{2} \\ \end{align*}

[_Riccati]

5.521

18616

\begin{align*} \left (3 x-y \right ) x^{\prime }+9 y -2 x&=0 \\ \end{align*}

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

28.247

18617

\begin{align*} 1&=\left (3 \,{\mathrm e}^{y}-2 x \right ) y^{\prime } \\ \end{align*}

[[_1st_order, _with_exponential_symmetries]]

96.082

18618

\begin{align*} y^{\prime }-4 y^{2} {\mathrm e}^{x}&=y \\ \end{align*}

[[_1st_order, _with_linear_symmetries], _Bernoulli]

3.835

18619

\begin{align*} y^{\prime } x +\left (x +1\right ) y&=x \\ \end{align*}

[_linear]

2.717

18620

\begin{align*} y^{\prime }&=\frac {x y^{2}-\frac {\sin \left (2 x \right )}{2}}{\left (-x^{2}+1\right ) y} \\ \end{align*}

[_Bernoulli]

21.655

18621

\begin{align*} \frac {\sqrt {x}\, y^{\prime }}{y}&=1 \\ \end{align*}

[_separable]

7.592

18622

\begin{align*} 5 x y^{2}+5 y+\left (5 x^{2} y+5 x \right ) y^{\prime }&=0 \\ \end{align*}

[_separable]

0.329

18623

\begin{align*} 2 y y^{\prime } x +\ln \left (x \right )&=-1-y^{2} \\ \end{align*}

[_exact, _Bernoulli]

5.801

18624

\begin{align*} \left (-x +2\right ) y^{\prime }&=y+2 \left (-x +2\right )^{5} \\ \end{align*}

[_linear]

4.938

18625

\begin{align*} y^{\prime } x&=-\frac {1}{\ln \left (x \right )} \\ \end{align*}

[_quadrature]

0.845

18626

\begin{align*} x^{\prime }&=\frac {2 x y +x^{2}}{3 y^{2}+2 x y} \\ \end{align*}

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

40.266

18627

\begin{align*} 4 y y^{\prime } x&=8 x^{2}+5 y^{2} \\ \end{align*}

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

31.412

18628

\begin{align*} y^{\prime }+y-y^{{1}/{4}}&=0 \\ \end{align*}

[_quadrature]

10.108

18629

\begin{align*} x^{\prime }&=y \\ y^{\prime }&=4+x \\ \end{align*}

system_of_ODEs

0.820

18630

\begin{align*} x^{\prime }&=x+2 y+\sin \left (t \right ) \\ y^{\prime }&=-x+y-\cos \left (t \right ) \\ \end{align*}

system_of_ODEs

1.872

18631

\begin{align*} x^{\prime }&=-2 t x+y \\ y^{\prime }&=3 x-y \\ \end{align*}

system_of_ODEs

0.037

18632

\begin{align*} x^{\prime }&=x+2 y+4 \\ y^{\prime }&=-2 x+y-3 \\ \end{align*}

system_of_ODEs

1.016

18633

\begin{align*} x^{\prime }&=3 x-y \\ y^{\prime }&=x+2 y \\ \end{align*}

system_of_ODEs

1.237

18634

\begin{align*} x^{\prime }&=-x+t y \\ y^{\prime }&=t x-y \\ \end{align*}

system_of_ODEs

0.040

18635

\begin{align*} x^{\prime }&=x+y+4 \\ y^{\prime }&=-2 x+\sin \left (t \right ) y \\ \end{align*}

system_of_ODEs

0.045

18636

\begin{align*} x^{\prime }&=3 x-4 y \\ y^{\prime }&=x+3 y \\ \end{align*}

system_of_ODEs

0.688

18637

\begin{align*} x^{\prime }&=2 x-y \\ y^{\prime }&=3 x-2 y \\ \end{align*}

system_of_ODEs

0.651

18638

\begin{align*} x^{\prime }&=-x+2 y \\ y^{\prime }&=-2 x-y \\ \end{align*}

system_of_ODEs

0.711

18639

\begin{align*} x^{\prime }&=y \\ y^{\prime }&=-x+2 \sin \left (t \right ) \\ \end{align*}

With initial conditions

\begin{align*} x \left (0\right ) &= 0 \\ y \left (0\right ) &= 0 \\ \end{align*}

system_of_ODEs

1.048

18640

\begin{align*} x^{\prime }&=x-4 y+2 t \\ y^{\prime }&=x-3 y-3 \\ \end{align*}

With initial conditions

\begin{align*} x \left (0\right ) &= 1 \\ y \left (0\right ) &= -2 \\ \end{align*}

system_of_ODEs

0.964

18641

\begin{align*} x^{\prime }&=-x+y+1 \\ y^{\prime }&=x+y-3 \\ \end{align*}

system_of_ODEs

1.203

18642

\begin{align*} x^{\prime }&=-x-4 y-4 \\ y^{\prime }&=x-y-6 \\ \end{align*}

system_of_ODEs

1.071

18643

\begin{align*} x^{\prime }&=-\frac {x}{4}-\frac {3 y}{4}+8 \\ y^{\prime }&=\frac {x}{2}+y-\frac {23}{2} \\ \end{align*}

system_of_ODEs

1.020

18644

\begin{align*} x^{\prime }&=-2 x+y-11 \\ y^{\prime }&=-5 x+4 y-35 \\ \end{align*}

system_of_ODEs

0.849

18645

\begin{align*} x^{\prime }&=x+y-3 \\ y^{\prime }&=-x+y+1 \\ \end{align*}

system_of_ODEs

0.959

18646

\begin{align*} x^{\prime }&=-5 x+4 y-35 \\ y^{\prime }&=-2 x+y-11 \\ \end{align*}

system_of_ODEs

0.957

18647

\begin{align*} x^{\prime }&=3 x-2 y \\ y^{\prime }&=2 x-2 y \\ \end{align*}

system_of_ODEs

0.654

18648

\begin{align*} x^{\prime }&=x-2 y \\ y^{\prime }&=3 x-4 y \\ \end{align*}

system_of_ODEs

0.659

18649

\begin{align*} x^{\prime }&=2 x-y \\ y^{\prime }&=3 x-2 y \\ \end{align*}

system_of_ODEs

0.670

18650

\begin{align*} x^{\prime }&=x+y \\ y^{\prime }&=4 x-2 y \\ \end{align*}

system_of_ODEs

0.684

18651

\begin{align*} x^{\prime }&=4 x-3 y \\ y^{\prime }&=8 x-6 y \\ \end{align*}

system_of_ODEs

0.720

18652

\begin{align*} x^{\prime }&=-2 x+y \\ y^{\prime }&=x-2 y \\ \end{align*}

system_of_ODEs

0.616

18653

\begin{align*} x^{\prime }&=\frac {5 x}{4}+\frac {3 y}{4} \\ y^{\prime }&=\frac {3 x}{4}+\frac {5 y}{4} \\ \end{align*}

system_of_ODEs

0.579

18654

\begin{align*} x^{\prime }&=-\frac {3 x}{4}-\frac {7 y}{4} \\ y^{\prime }&=\frac {x}{4}+\frac {5 y}{4} \\ \end{align*}

system_of_ODEs

0.638

18655

\begin{align*} x^{\prime }&=-\frac {x}{4}-\frac {3 y}{4} \\ y^{\prime }&=\frac {x}{2}+y \\ \end{align*}

system_of_ODEs

0.643

18656

\begin{align*} x^{\prime }&=5 x-y \\ y^{\prime }&=3 x+y \\ \end{align*}

system_of_ODEs

0.661

18657

\begin{align*} x^{\prime }&=-2 x+y \\ y^{\prime }&=-5 x+4 y \\ \end{align*}

system_of_ODEs

0.622

18658

\begin{align*} x^{\prime }&=3 x+6 y \\ y^{\prime }&=-x-2 y \\ \end{align*}

system_of_ODEs

0.626

18659

\begin{align*} x^{\prime }&=x-2 y \\ y^{\prime }&=3 x-4 y \\ \end{align*}

With initial conditions

\begin{align*} x \left (0\right ) &= 3 \\ y \left (0\right ) &= 1 \\ \end{align*}

system_of_ODEs

0.661

18660

\begin{align*} x^{\prime }&=2 x-y \\ y^{\prime }&=3 x-2 y \\ \end{align*}

With initial conditions

\begin{align*} x \left (0\right ) &= 2 \\ y \left (0\right ) &= 5 \\ \end{align*}

system_of_ODEs

0.668

18661

\begin{align*} x^{\prime }&=5 x-y \\ y^{\prime }&=3 x+y \\ \end{align*}

With initial conditions

\begin{align*} x \left (0\right ) &= 2 \\ y \left (0\right ) &= -1 \\ \end{align*}

system_of_ODEs

0.665

18662

\begin{align*} x^{\prime }&=-2 x+y \\ y^{\prime }&=-5 x+4 y \\ \end{align*}

With initial conditions

\begin{align*} x \left (0\right ) &= 1 \\ y \left (0\right ) &= 3 \\ \end{align*}

system_of_ODEs

0.691

18663

\begin{align*} x^{\prime }&=3 x-2 y \\ y^{\prime }&=4 x-y \\ \end{align*}

system_of_ODEs

0.836

18664

\begin{align*} x^{\prime }&=-x-4 y \\ y^{\prime }&=x-y \\ \end{align*}

system_of_ODEs

0.653

18665

\begin{align*} x^{\prime }&=2 x-5 y \\ y^{\prime }&=x-2 y \\ \end{align*}

system_of_ODEs

0.660

18666

\begin{align*} x^{\prime }&=2 x-\frac {5 y}{2} \\ y^{\prime }&=\frac {9 x}{5}-y \\ \end{align*}

system_of_ODEs

0.868

18667

\begin{align*} x^{\prime }&=x-y \\ y^{\prime }&=5 x-3 y \\ \end{align*}

system_of_ODEs

0.816

18668

\begin{align*} x^{\prime }&=x+2 y \\ y^{\prime }&=-5 x-y \\ \end{align*}

system_of_ODEs

0.730

18669

\begin{align*} x^{\prime }&=-x-4 y \\ y^{\prime }&=x-y \\ \end{align*}

With initial conditions

\begin{align*} x \left (0\right ) &= 4 \\ y \left (0\right ) &= -3 \\ \end{align*}

system_of_ODEs

0.704

18670

\begin{align*} x^{\prime }&=2 x-5 y \\ y^{\prime }&=x-2 y \\ \end{align*}

With initial conditions

\begin{align*} x \left (0\right ) &= 3 \\ y \left (0\right ) &= 2 \\ \end{align*}

system_of_ODEs

0.680

18671

\begin{align*} x^{\prime }&=x-5 y \\ y^{\prime }&=x-3 y \\ \end{align*}

With initial conditions

\begin{align*} x \left (0\right ) &= 1 \\ y \left (0\right ) &= 1 \\ \end{align*}

system_of_ODEs

0.772

18672

\begin{align*} x^{\prime }&=-3 x+2 y \\ y^{\prime }&=-x-y \\ \end{align*}

With initial conditions

\begin{align*} x \left (0\right ) &= 1 \\ y \left (0\right ) &= -2 \\ \end{align*}

system_of_ODEs

0.838

18673

\begin{align*} x^{\prime }&=\frac {3 x}{4}-2 y \\ y^{\prime }&=x-\frac {5 y}{4} \\ \end{align*}

system_of_ODEs

0.793

18674

\begin{align*} x^{\prime }&=-\frac {4 x}{5}+2 y \\ y^{\prime }&=-x+\frac {6 y}{5} \\ \end{align*}

system_of_ODEs

0.796

18675

\begin{align*} x^{\prime }&=a x+y \\ y^{\prime }&=-x+a y \\ \end{align*}

system_of_ODEs

0.683

18676

\begin{align*} x^{\prime }&=-5 y \\ y^{\prime }&=x+a y \\ \end{align*}

system_of_ODEs

1.543

18677

\begin{align*} x^{\prime }&=2 x-5 y \\ y^{\prime }&=a x-2 y \\ \end{align*}

system_of_ODEs

0.864

18678

\begin{align*} x^{\prime }&=\frac {5 x}{4}+\frac {3 y}{4} \\ y^{\prime }&=a x+\frac {5 y}{4} \\ \end{align*}

system_of_ODEs

0.851

18679

\begin{align*} x^{\prime }&=-x+a y \\ y^{\prime }&=-x-y \\ \end{align*}

system_of_ODEs

0.801

18680

\begin{align*} x^{\prime }&=3 x+a y \\ y^{\prime }&=-6 x-4 y \\ \end{align*}

system_of_ODEs

0.947

18681

\begin{align*} x^{\prime }&=a x+10 y \\ y^{\prime }&=-x-4 y \\ \end{align*}

system_of_ODEs

1.587

18682

\begin{align*} x^{\prime }&=4 x+a y \\ y^{\prime }&=8 x-6 y \\ \end{align*}

system_of_ODEs

0.878

18683

\begin{align*} i^{\prime }&=\frac {i}{2}-\frac {v}{8} \\ v^{\prime }&=2 i-\frac {v}{2} \\ \end{align*}

system_of_ODEs

0.520

18684

\begin{align*} x^{\prime }&=3 x-4 y \\ y^{\prime }&=x-y \\ \end{align*}

system_of_ODEs

0.544

18685

\begin{align*} x^{\prime }&=\frac {5 x}{4}+\frac {3 y}{4} \\ y^{\prime }&=-\frac {3 x}{4}-\frac {y}{4} \\ \end{align*}

system_of_ODEs

0.557

18686

\begin{align*} x^{\prime }&=-\frac {3 x}{2}+y \\ y^{\prime }&=-\frac {x}{4}-\frac {y}{2} \\ \end{align*}

system_of_ODEs

0.575

18687

\begin{align*} x^{\prime }&=-3 x+\frac {5 y}{2} \\ y^{\prime }&=-\frac {5 x}{2}+2 y \\ \end{align*}

system_of_ODEs

0.548

18688

\begin{align*} x^{\prime }&=-x-\frac {y}{2} \\ y^{\prime }&=2 x-3 y \\ \end{align*}

system_of_ODEs

0.553

18689

\begin{align*} x^{\prime }&=2 x+\frac {y}{2} \\ y^{\prime }&=-\frac {x}{2}+y \\ \end{align*}

system_of_ODEs

0.532

18690

\begin{align*} x^{\prime }&=x-4 y \\ y^{\prime }&=4 x-7 y \\ \end{align*}

With initial conditions

\begin{align*} x \left (0\right ) &= 3 \\ y \left (0\right ) &= 2 \\ \end{align*}

system_of_ODEs

0.592

18691

\begin{align*} x^{\prime }&=-\frac {5 x}{2}+\frac {3 y}{2} \\ y^{\prime }&=-\frac {3 x}{2}+\frac {y}{2} \\ \end{align*}

With initial conditions

\begin{align*} x \left (0\right ) &= 3 \\ y \left (0\right ) &= -1 \\ \end{align*}

system_of_ODEs

0.568

18692

\begin{align*} x^{\prime }&=2 x+\frac {3 y}{2} \\ y^{\prime }&=-\frac {3 x}{2}-y \\ \end{align*}

With initial conditions

\begin{align*} x \left (0\right ) &= 3 \\ y \left (0\right ) &= -2 \\ \end{align*}

system_of_ODEs

0.585

18693

\begin{align*} x^{\prime }&=\frac {5 x}{4}+\frac {3 y}{4} \\ y^{\prime }&=-\frac {3 x}{4}-\frac {y}{4} \\ \end{align*}

With initial conditions

\begin{align*} x \left (0\right ) &= 2 \\ y \left (0\right ) &= 3 \\ \end{align*}

system_of_ODEs

0.558

18694

\begin{align*} x^{\prime }&=-3 x+\frac {5 y}{2} \\ y^{\prime }&=-\frac {5 x}{2}+2 y \\ \end{align*}

With initial conditions

\begin{align*} x \left (0\right ) &= 3 \\ y \left (0\right ) &= 1 \\ \end{align*}

system_of_ODEs

0.549

18695

\begin{align*} x^{\prime }&=2 x+\frac {y}{2} \\ y^{\prime }&=-\frac {x}{2}+y \\ \end{align*}

With initial conditions

\begin{align*} x \left (0\right ) &= 1 \\ y \left (0\right ) &= 3 \\ \end{align*}

system_of_ODEs

0.563

18696

\begin{align*} x^{\prime }&=-x \\ y^{\prime }&=-2 y \\ \end{align*}

With initial conditions

\begin{align*} x \left (0\right ) &= 4 \\ y \left (0\right ) &= 2 \\ \end{align*}

system_of_ODEs

0.535

18697

\begin{align*} x^{\prime }&=-x \\ y^{\prime }&=2 y \\ \end{align*}

With initial conditions

\begin{align*} x \left (0\right ) &= 4 \\ y \left (0\right ) &= 2 \\ \end{align*}

system_of_ODEs

0.518

18698

\begin{align*} x^{\prime }&=-x \\ y^{\prime }&=-2 y \\ \end{align*}

With initial conditions

\begin{align*} x \left (0\right ) &= 4 \\ y \left (0\right ) &= 0 \\ \end{align*}

system_of_ODEs

0.520

18699

\begin{align*} x^{\prime }&=2 y \\ y^{\prime }&=8 x \\ \end{align*}

With initial conditions

\begin{align*} x \left (0\right ) &= 2 \\ y \left (0\right ) &= -1 \\ \end{align*}

system_of_ODEs

0.685

18700

\begin{align*} x^{\prime }&=2 y \\ y^{\prime }&=8 x \\ \end{align*}

With initial conditions

\begin{align*} x \left (0\right ) &= 1 \\ y \left (0\right ) &= -3 \\ \end{align*}

system_of_ODEs

0.684