2.2.17 Problems 1601 to 1700

Table 2.47: 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]

22.471

1602

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

[_separable]

2.868

1603

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

[_quadrature]

27.386

1604

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

[[_Abel, ‘2nd type‘, ‘class B‘]]

4.072

1605

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

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

17.968

1606

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

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

4.241

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‘]]

4.212

1608

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

[_Riccati]

12.157

1609

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

[‘y=_G(x,y’)‘]

3.193

1610

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

[‘y=_G(x,y’)‘]

1.069

1611

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

[‘y=_G(x,y’)‘]

8.737

1612

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

[‘y=_G(x,y’)‘]

2.736

1613

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

[_separable]

3.016

1614

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

[‘y=_G(x,y’)‘]

1.581

1615

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

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

14.250

1616

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

[‘y=_G(x,y’)‘]

3.658

1617

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

[_separable]

3.292

1618

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

[‘y=_G(x,y’)‘]

2.135

1619

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

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

5.043

1620

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

[_separable]

5.145

1621

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

[_quadrature]

11.677

1622

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

[_separable]

32.520

1623

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

[_separable]

30.945

1624

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

[_separable]

19.852

1625

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

[_Bernoulli]

2.964

1626

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

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

9.612

1627

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

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

0.168

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]

15.143

1629

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

[_quadrature]

0.437

1630

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

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

0.232

1631

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

[_Bernoulli]

0.778

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]

0.762

1633

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

[_Bernoulli]

1.115

1634

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

[_rational, _Bernoulli]

0.275

1635

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

[_Bernoulli]

0.328

1636

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

[_separable]

6.118

1637

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

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

0.434

1638

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

[_quadrature]

4.246

1639

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

[_rational, _Bernoulli]

0.494

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]

0.539

1641

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

[_Bernoulli]

0.881

1642

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

[_linear]

3.283

1643

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

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

7.874

1644

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

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

10.837

1645

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

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

5.401

1646

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

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

7.891

1647

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

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

16.883

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‘]]

5.632

1649

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

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

7.895

1650

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

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

14.144

1651

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

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

12.826

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]

13.482

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]

9.861

1654

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

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

13.994

1655

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

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

8.644

1656

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

[[_homogeneous, ‘class A‘]]

13.362

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]

11.281

1658

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

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

14.633

1659

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

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

14.087

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]

10.471

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]

12.269

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]

19.263

1663

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

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

18.708

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‘]]

81.908

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‘]]

18.378

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‘]]

18.609

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‘]]

3.451

1668

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

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

28.430

1669

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

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

3.731

1670

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

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

8.832

1671

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

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

10.448

1672

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

[[_1st_order, _with_linear_symmetries], _Riccati]

3.690

1673

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

[_Riccati]

1.003

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]

6.117

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‘]]

10.209

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‘]]

5.211

1677

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

19.209

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‘]]

12.500

1679

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

[_Riccati]

4.245

1680

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

[_separable]

0.083

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]

115.123

1682

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

[_quadrature]

0.434

1683

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

[_exact, _rational]

2.368

1684

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

[_quadrature]

0.186

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‘]]

13.958

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]

57.690

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‘]]

15.471

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‘]]

4.046

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]

3.234

1690

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

[_separable]

4.854

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’)‘]

5.681

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]

11.520

1693

\begin{align*} {\mathrm e}^{x} \left (y^{2} x^{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‘]]

4.928

1694

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

[_exact]

3.623

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)]‘]]

6.653

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‘]]

3.345

1697

\begin{align*} -4 \cos \left (x \right ) y+4 \cos \left (x \right ) \sin \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‘]]

7.910

1698

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

[_separable]

5.411

1699

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

[_linear]

3.013

1700

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

[_separable]

3.519