2.2.16 Problems 1501 to 1600

Table 2.49: Main lookup table. Sorted sequentially by problem number.

#

ODE

CAS classification

Solved?

Maple

Mma

Sympy

time(sec)

1501

\begin{align*} y^{\prime \prime }+4 y&=\operatorname {Heaviside}\left (t -\pi \right )-\operatorname {Heaviside}\left (t -3 \pi \right ) \\ y \left (0\right ) &= 0 \\ y^{\prime }\left (0\right ) &= 0 \\ \end{align*}

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

1.028

1502

\begin{align*} y^{\prime \prime \prime \prime }+5 y^{\prime \prime }+4 y&=1-\operatorname {Heaviside}\left (t -\pi \right ) \\ y \left (0\right ) &= 0 \\ y^{\prime }\left (0\right ) &= 0 \\ y^{\prime \prime }\left (0\right ) &= 0 \\ y^{\prime \prime \prime }\left (0\right ) &= 0 \\ \end{align*}

Using Laplace transform method.

[[_high_order, _linear, _nonhomogeneous]]

1.174

1503

\begin{align*} u^{\prime \prime }+\frac {u^{\prime }}{4}+u&=k \left (\operatorname {Heaviside}\left (t -\frac {3}{2}\right )-\operatorname {Heaviside}\left (t -\frac {5}{2}\right )\right ) \\ u \left (0\right ) &= 0 \\ u^{\prime }\left (0\right ) &= 0 \\ \end{align*}

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

11.090

1504

\begin{align*} u^{\prime \prime }+\frac {u^{\prime }}{4}+u&=\frac {\operatorname {Heaviside}\left (t -\frac {3}{2}\right )}{2}-\frac {\operatorname {Heaviside}\left (t -\frac {5}{2}\right )}{2} \\ u \left (0\right ) &= 0 \\ u^{\prime }\left (0\right ) &= 0 \\ \end{align*}

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

3.904

1505

\begin{align*} u^{\prime \prime }+\frac {u^{\prime }}{4}+u&=\frac {\operatorname {Heaviside}\left (t -5\right ) \left (t -5\right )-\operatorname {Heaviside}\left (t -5-k \right ) \left (t -5-k \right )}{k} \\ u \left (0\right ) &= 0 \\ u^{\prime }\left (0\right ) &= 0 \\ \end{align*}

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

1.937

1506

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

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

1.004

1507

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

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.659

1508

\begin{align*} y^{\prime \prime }+3 y^{\prime }+2 y&=\delta \left (t -5\right )+\operatorname {Heaviside}\left (t -10\right ) \\ y \left (0\right ) &= 0 \\ y^{\prime }\left (0\right ) &= {\frac {1}{2}} \\ \end{align*}

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

2.374

1509

\begin{align*} y^{\prime \prime }+2 y^{\prime }+3 y&=\sin \left (t \right )+\delta \left (t -3 \pi \right ) \\ y \left (0\right ) &= 0 \\ y^{\prime }\left (0\right ) &= 0 \\ \end{align*}

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

2.927

1510

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

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.625

1511

\begin{align*} y^{\prime \prime }+4 y&=2 \delta \left (t -\frac {\pi }{4}\right ) \\ y \left (0\right ) &= 0 \\ y^{\prime }\left (0\right ) &= 0 \\ \end{align*}

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.625

1512

\begin{align*} y^{\prime \prime }+2 y^{\prime }+2 y&=\cos \left (t \right )+\delta \left (t -\frac {\pi }{2}\right ) \\ y \left (0\right ) &= 0 \\ y^{\prime }\left (0\right ) &= 0 \\ \end{align*}

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

1.635

1513

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

Using Laplace transform method.

[[_high_order, _linear, _nonhomogeneous]]

0.828

1514

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

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

1.424

1515

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

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

1.418

1516

\begin{align*} y^{\prime \prime }+y&=\frac {\operatorname {Heaviside}\left (t -4+k \right )-\operatorname {Heaviside}\left (t -4-k \right )}{2 k} \\ y \left (0\right ) &= 0 \\ y^{\prime }\left (0\right ) &= 0 \\ \end{align*}

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

1.347

1517

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

[[_2nd_order, _linear, _nonhomogeneous]]

1.335

1518

\begin{align*} y^{\prime \prime }+2 y^{\prime }+2 y&=\delta \left (t -\pi \right ) \\ y \left (0\right ) &= 0 \\ y^{\prime }\left (0\right ) &= 0 \\ \end{align*}

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.684

1519

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

[_quadrature]

1.646

1520

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

[_linear]

3.750

1521

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

[_separable]

3.069

1522

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

[_separable]

4.709

1523

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

[_separable]

3.985

1524

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

[_quadrature]

0.977

1525

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

[_quadrature]

0.498

1526

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

[_quadrature]

0.466

1527

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

[_quadrature]

0.525

1528

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

[_quadrature]

1.025

1529

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

[_quadrature]

1.096

1530

\begin{align*} y^{\prime }&=\cos \left (x \right )-\tan \left (x \right ) y \\ y \left (\frac {\pi }{4}\right ) &= \frac {\pi \sqrt {2}}{8} \\ \end{align*}

[_linear]

3.067

1531

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

[_linear]

2.596

1532

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

[_separable]

4.456

1533

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

[_separable]

5.589

1534

\begin{align*} y^{\prime }&=a y^{\frac {a -1}{a}} \\ \end{align*}

[_quadrature]

4.442

1535

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

[_quadrature]

5.354

1536

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

[[_1st_order, _with_linear_symmetries], _Clairaut]

5.444

1537

\begin{align*} y^{\prime }+a y&=0 \\ \end{align*}

[_quadrature]

1.448

1538

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

[_separable]

3.529

1539

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

[_separable]

4.434

1540

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

[_separable]

4.220

1541

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

[_separable]

3.585

1542

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

[_separable]

2.871

1543

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

[_separable]

4.413

1544

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

[_separable]

4.967

1545

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

[_separable]

3.279

1546

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

[_separable]

3.779

1547

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

[_separable]

3.884

1548

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

[_quadrature]

1.204

1549

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

[_linear]

1.720

1550

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

[_linear]

4.392

1551

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

[_linear]

2.510

1552

\begin{align*} y^{\prime }+\frac {y}{x}&=\frac {7}{x^{2}}+3 \\ \end{align*}

[_linear]

2.382

1553

\begin{align*} y^{\prime }+\frac {4 y}{-1+x}&=\frac {1}{\left (-1+x \right )^{5}}+\frac {\sin \left (x \right )}{\left (-1+x \right )^{4}} \\ \end{align*}

[_linear]

7.404

1554

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

[_linear]

4.764

1555

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

[_linear]

2.513

1556

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

[_linear]

2.564

1557

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

[_linear]

5.243

1558

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

[_linear]

5.302

1559

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

[_linear]

3.341

1560

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

[_linear]

2.502

1561

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

[[_linear, ‘class A‘]]

2.516

1562

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

[_linear]

4.608

1563

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

[_linear]

2.576

1564

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

[_linear]

3.073

1565

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

[_linear]

2.599

1566

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

[_linear]

6.713

1567

\begin{align*} y^{\prime } x +2 y&=8 x^{2} \\ y \left (1\right ) &= 3 \\ \end{align*}

[_linear]

3.947

1568

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

[_linear]

2.724

1569

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

[_separable]

2.950

1570

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

[_linear]

5.458

1571

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

[_linear]

2.964

1572

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

[_linear]

3.213

1573

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

[_separable]

4.617

1574

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

[_quadrature]

2.069

1575

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

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

3.951

1576

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

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

6.542

1577

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

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

5.796

1578

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

[_separable]

3.754

1579

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

[_separable]

4.885

1580

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

[_separable]

5.744

1581

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

[_separable]

4.446

1582

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

[_separable]

13.622

1583

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

[_separable]

3.876

1584

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

[_separable]

3.092

1585

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

[_separable]

6.630

1586

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

[_separable]

5.779

1587

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

[_separable]

3.096

1588

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

[_separable]

5.099

1589

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

[_separable]

4.236

1590

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

[_separable]

4.447

1591

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

[_separable]

3.155

1592

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

[_separable]

12.365

1593

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

[_separable]

5.088

1594

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

[_separable]

7.431

1595

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

[_separable]

4.246

1596

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

[_quadrature]

1.699

1597

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

[_separable]

6.603

1598

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

[_separable]

6.132

1599

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

[_separable]

3.959

1600

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

[_separable]

4.203