2.2.17 Problems 1601 to 1700

Table 2.51: Main lookup table. Sorted sequentially by problem number.

#

ODE

CAS classification

Solved?

Maple

Mma

Sympy

time(sec)

1601

\begin{align*} y^{\prime } \sqrt {-x^{2}+1}+\sqrt {1-y^{2}}&=0 \\ \end{align*}

[_separable]

22.372

1602

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

[_separable]

3.421

1603

\begin{align*} y^{\prime }&=a y-b y^{2} \\ y \left (0\right ) &= \operatorname {y0} \\ \end{align*}

[_quadrature]

6.223

1604

\begin{align*} y^{\prime }+y&=\frac {2 x \,{\mathrm e}^{-x}}{1+y \,{\mathrm e}^{x}} \\ \end{align*}

[[_Abel, ‘2nd type‘, ‘class B‘]]

5.154

1605

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

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

12.619

1606

\begin{align*} y^{\prime }-y&=\frac {\left (x +1\right ) {\mathrm e}^{4 x}}{\left (y+{\mathrm e}^{x}\right )^{2}} \\ \end{align*}

[[_1st_order, ‘_with_symmetry_[F(x),G(x)*y+H(x)]‘]]

4.022

1607

\begin{align*} y^{\prime }-2 y&=\frac {x \,{\mathrm e}^{2 x}}{1-y \,{\mathrm e}^{-2 x}} \\ \end{align*}

[[_Abel, ‘2nd type‘, ‘class A‘]]

5.362

1608

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

[_Riccati]

10.178

1609

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

[‘y=_G(x,y’)‘]

2.470

1610

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

[‘y=_G(x,y’)‘]

1.139

1611

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

[‘y=_G(x,y’)‘]

3.995

1612

\begin{align*} y^{\prime }&=\left (x^{2}+y^{2}\right ) y^{{1}/{3}} \\ \end{align*}

[‘y=_G(x,y’)‘]

1.861

1613

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

[_separable]

2.836

1614

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

[‘y=_G(x,y’)‘]

1.281

1615

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

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

21.569

1616

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

[‘y=_G(x,y’)‘]

3.092

1617

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

[_separable]

3.023

1618

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

[‘y=_G(x,y’)‘]

1.487

1619

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

[[_homogeneous, ‘class C‘], _dAlembert]

4.158

1620

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

[_separable]

4.016

1621

\begin{align*} y^{\prime }&=y^{{2}/{5}} \\ y \left (0\right ) &= 1 \\ \end{align*}

[_quadrature]

2.977

1622

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

[_separable]

46.484

1623

\begin{align*} y^{\prime }&=3 x \left (-1+y\right )^{{1}/{3}} \\ y \left (0\right ) &= 9 \\ \end{align*}

[_separable]

42.148

1624

\begin{align*} y^{\prime }&=3 x \left (-1+y\right )^{{1}/{3}} \\ y \left (3\right ) &= -7 \\ \end{align*}

[_separable]

11.588

1625

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

[_Bernoulli]

2.688

1626

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

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

6.746

1627

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

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

0.333

1628

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

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

10.716

1629

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

[_quadrature]

0.477

1630

\begin{align*} 7 x y^{\prime }-2 y&=-\frac {x^{2}}{y^{6}} \\ \end{align*}

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

0.375

1631

\begin{align*} x^{2} y^{\prime }+2 y&=2 \,{\mathrm e}^{\frac {1}{x}} \sqrt {y} \\ \end{align*}

[_Bernoulli]

0.774

1632

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

[_rational, _Bernoulli]

0.829

1633

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

[_Bernoulli]

0.977

1634

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

[_rational, _Bernoulli]

0.435

1635

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

[_Bernoulli]

0.483

1636

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

[_separable]

6.500

1637

\begin{align*} x y^{\prime }+y&=x^{4} y^{4} \\ y \left (1\right ) &= {\frac {1}{2}} \\ \end{align*}

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

0.523

1638

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

[_quadrature]

4.046

1639

\begin{align*} y^{\prime }-4 y&=\frac {48 x}{y^{2}} \\ y \left (0\right ) &= 1 \\ \end{align*}

[_rational, _Bernoulli]

0.579

1640

\begin{align*} x^{2} y^{\prime }+2 y x&=y^{3} \\ y \left (1\right ) &= \frac {\sqrt {2}}{2} \\ \end{align*}

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

0.621

1641

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

[_Bernoulli]

1.049

1642

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

[_linear]

2.908

1643

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

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

5.181

1644

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

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

98.177

1645

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

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

9.595

1646

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

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

5.100

1647

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

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

10.547

1648

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

[[_homogeneous, ‘class A‘]]

5.540

1649

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

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

5.059

1650

\begin{align*} y^{\prime }&=\frac {x^{3}+y^{3}}{x y^{2}} \\ y \left (1\right ) &= 3 \\ \end{align*}

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

17.503

1651

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

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

11.773

1652

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

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

11.773

1653

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

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

6.141

1654

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

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

12.819

1655

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

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

12.168

1656

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

[[_homogeneous, ‘class A‘]]

11.729

1657

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

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

12.307

1658

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

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

17.868

1659

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

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

15.434

1660

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

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

5.748

1661

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

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

8.865

1662

\begin{align*} x^{2} y^{\prime }&=y^{2}+y x -4 x^{2} \\ y \left (-1\right ) &= 0 \\ \end{align*}

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

12.665

1663

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

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

27.821

1664

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

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

46.084

1665

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

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

14.360

1666

\begin{align*} y^{\prime }&=\frac {-6 x +y-3}{2 x -y-1} \\ \end{align*}

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

23.878

1667

\begin{align*} y^{\prime }&=\frac {2 x +y+1}{x +2 y-4} \\ \end{align*}

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

2.877

1668

\begin{align*} y^{\prime }&=\frac {-x +3 y-14}{x +y-2} \\ \end{align*}

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

21.691

1669

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

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

3.434

1670

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

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

6.185

1671

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

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

6.246

1672

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

[[_1st_order, _with_linear_symmetries], _Riccati]

3.252

1673

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

[[_1st_order, ‘_with_symmetry_[F(x),G(y)]‘], _Riccati]

1.243

1674

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

[[_1st_order, ‘_with_symmetry_[F(x),G(y)]‘], _Riccati]

4.638

1675

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

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

7.895

1676

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

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

6.457

1677

\begin{align*} y^{\prime }+\frac {2 y}{x}&=\frac {3 x^{2} y^{2}+6 y x +2}{x^{2} \left (2 y x +3\right )} \\ y \left (2\right ) &= 2 \\ \end{align*}

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

25.243

1678

\begin{align*} y^{\prime }+\frac {3 y}{x}&=\frac {3 y^{2} x^{4}+10 x^{2} y+6}{x^{3} \left (2 x^{2} y+5\right )} \\ y \left (1\right ) &= 1 \\ \end{align*}

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

18.579

1679

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

[_Riccati]

4.279

1680

\begin{align*} 6 x^{2} y^{2}+4 x^{3} y y^{\prime }&=0 \\ \end{align*}

[_separable]

0.219

1681

\begin{align*} 3 \cos \left (x \right ) y+4 x \,{\mathrm e}^{x}+2 x^{3} y+\left (3 \sin \left (x \right )+3\right ) y^{\prime }&=0 \\ \end{align*}

[_linear]

61.855

1682

\begin{align*} 14 x^{2} y^{3}+21 x^{2} y^{2} y^{\prime }&=0 \\ \end{align*}

[_quadrature]

0.410

1683

\begin{align*} 2 x -2 y^{2}+\left (12 y^{2}-4 y x \right ) y^{\prime }&=0 \\ \end{align*}

[_exact, _rational]

2.480

1684

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

[_quadrature]

0.180

1685

\begin{align*} 4 x +7 y+\left (3 x +4 y\right ) y^{\prime }&=0 \\ \end{align*}

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

14.451

1686

\begin{align*} -2 \sin \left (x \right ) y^{2}+3 y^{3}-2 x +\left (4 \cos \left (x \right ) y+9 x y^{2}\right ) y^{\prime }&=0 \\ \end{align*}

[_exact]

27.067

1687

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

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

21.383

1688

\begin{align*} 3 x^{2}+2 y x +4 y^{2}+\left (x^{2}+8 y x +18 y\right ) y^{\prime }&=0 \\ \end{align*}

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

5.700

1689

\begin{align*} 2 x^{2}+8 y x +y^{2}+\left (2 x^{2}+\frac {x y^{3}}{3}\right ) y^{\prime }&=0 \\ \end{align*}

[_rational]

2.958

1690

\begin{align*} \frac {1}{x}+2 x +\left (\frac {1}{y}+2 y\right ) y^{\prime }&=0 \\ \end{align*}

[_separable]

4.315

1691

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

[‘y=_G(x,y’)‘]

5.747

1692

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

[_separable]

9.759

1693

\begin{align*} {\mathrm e}^{x} \left (x^{2} y^{2}+2 x y^{2}\right )+6 x +\left (2 x^{2} y \,{\mathrm e}^{x}+2\right ) y^{\prime }&=0 \\ \end{align*}

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

6.449

1694

\begin{align*} x^{2} {\mathrm e}^{x^{2}+y} \left (2 x^{2}+3\right )+4 x +\left (x^{3} {\mathrm e}^{x^{2}+y}-12 y^{2}\right ) y^{\prime }&=0 \\ \end{align*}

[_exact]

3.535

1695

\begin{align*} {\mathrm e}^{y x} \left (x^{4} y+4 x^{3}\right )+3 y+\left (x^{5} {\mathrm e}^{y x}+3 x \right ) y^{\prime }&=0 \\ \end{align*}

[_exact, [_1st_order, ‘_with_symmetry_[F(x),G(x)*y+H(x)]‘]]

6.749

1696

\begin{align*} 4 x^{3} y^{2}-6 x^{2} y-2 x -3+\left (2 x^{4} y-2 x^{3}\right ) y^{\prime }&=0 \\ y \left (1\right ) &= 3 \\ \end{align*}

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

7.530

1697

\begin{align*} -4 \cos \left (x \right ) y+4 \sin \left (x \right ) \cos \left (x \right )+\sec \left (x \right )^{2}+\left (4 y-4 \sin \left (x \right )\right ) y^{\prime }&=0 \\ y \left (\frac {\pi }{4}\right ) &= 0 \\ \end{align*}

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

10.685

1698

\begin{align*} \left (y^{3}-1\right ) {\mathrm e}^{x}+3 y^{2} \left (1+{\mathrm e}^{x}\right ) y^{\prime }&=0 \\ y \left (0\right ) &= 0 \\ \end{align*}

[_separable]

4.284

1699

\begin{align*} \sin \left (x \right )-y \sin \left (x \right )-2 \cos \left (x \right )+\cos \left (x \right ) y^{\prime }&=0 \\ y \left (0\right ) &= 1 \\ \end{align*}

[_linear]

3.402

1700

\begin{align*} \left (2 x -1\right ) \left (-1+y\right )+\left (x +2\right ) \left (x -3\right ) y^{\prime }&=0 \\ y \left (1\right ) &= -1 \\ \end{align*}

[_separable]

3.692