2.2.85 Problems 8401 to 8500

Table 2.187: Main lookup table. Sorted sequentially by problem number.

#

ODE

CAS classification

Solved?

Maple

Mma

Sympy

time(sec)

8401

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

[_separable]

4.026

8402

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

[_separable]

10.043

8403

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

[_separable]

14.575

8404

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

[_quadrature]

29.306

8405

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

[_quadrature]

1.592

8406

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

[_separable]

6.635

8407

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

[_quadrature]

1.454

8408

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

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

9.704

8409

\begin{align*} m^{\prime }&=-\frac {k}{m^{2}} \\ m \left (0\right ) &= m_{0} \\ \end{align*}

[_quadrature]

6.267

8410

\begin{align*} u^{\prime }&=a \sqrt {1+u^{2}} \\ u \left (0\right ) &= 0 \\ \end{align*}

[_quadrature]

7.003

8411

\begin{align*} x^{\prime }&=k \left (A -x\right )^{2} \\ x \left (0\right ) &= 0 \\ \end{align*}

[_quadrature]

4.085

8412

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

[_quadrature]

0.621

8413

\begin{align*} y^{\prime }&=-\frac {8 x +5}{3 y^{2}+1} \\ y \left (0\right ) &= -1 \\ \end{align*}

[_separable]

0.766

8414

\begin{align*} y^{\prime }&=-\frac {8 x +5}{3 y^{2}+1} \\ y \left (0\right ) &= 2 \\ \end{align*}

[_separable]

1.753

8415

\begin{align*} y^{\prime }&=-\frac {8 x +5}{3 y^{2}+1} \\ y \left (-1\right ) &= 4 \\ \end{align*}

[_separable]

1.365

8416

\begin{align*} y^{\prime }&=-\frac {8 x +5}{3 y^{2}+1} \\ y \left (-1\right ) &= -3 \\ \end{align*}

[_separable]

0.812

8417

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

[_separable]

5.300

8418

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

[_separable]

5.708

8419

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

[_separable]

3.583

8420

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

[_quadrature]

1.799

8421

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

[_quadrature]

1.516

8422

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

[[_linear, ‘class A‘]]

2.352

8423

\begin{align*} 3 y^{\prime }+12 y&=4 \\ \end{align*}

[_quadrature]

1.259

8424

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

[_separable]

4.049

8425

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

[_linear]

3.618

8426

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

[_linear]

3.112

8427

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

[[_linear, ‘class A‘]]

3.108

8428

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

[_linear]

4.159

8429

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

[_separable]

5.794

8430

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

[_linear]

3.867

8431

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

[_linear]

2.435

8432

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

[_linear]

2.793

8433

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

[_linear]

5.161

8434

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

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

8.239

8435

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

[[_1st_order, ‘_with_symmetry_[F(x)*G(y),0]‘]]

2.713

8436

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

[_linear]

3.306

8437

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

[_linear]

6.603

8438

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

[_linear]

2.968

8439

\begin{align*} \left (x +2\right )^{2} y^{\prime }&=5-8 y-4 y x \\ \end{align*}

[_linear]

4.286

8440

\begin{align*} r^{\prime }+r \sec \left (t \right )&=\cos \left (t \right ) \\ \end{align*}

[_linear]

3.117

8441

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

[_separable]

4.207

8442

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

[_linear]

4.406

8443

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

[_linear]

3.540

8444

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

[[_linear, ‘class A‘]]

2.627

8445

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

[[_linear, ‘class A‘]]

2.308

8446

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

[_linear]

2.690

8447

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

[_rational, _Bernoulli]

3.858

8448

\begin{align*} L i^{\prime }+R i&=E \\ i \left (0\right ) &= i_{0} \\ \end{align*}

[_quadrature]

2.363

8449

\begin{align*} T^{\prime }&=k \left (T-T_{m} \right ) \\ T \left (0\right ) &= T_{0} \\ \end{align*}

[_quadrature]

2.287

8450

\begin{align*} x y^{\prime }+y&=1+4 x \\ y \left (1\right ) &= 8 \\ \end{align*}

[_linear]

3.649

8451

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

[_linear]

2.726

8452

\begin{align*} \left (x +1\right ) y^{\prime }+y&=\ln \left (x \right ) \\ y \left (1\right ) &= 10 \\ \end{align*}

[_linear]

3.004

8453

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

[_linear]

2.333

8454

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

[_separable]

4.596

8455

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

[_linear]

3.604

8456

\begin{align*} 2 y+y^{\prime }&=\left \{\begin {array}{cc} 1 & 0\le x \le 3 \\ 0 & 3<x \end {array}\right . \\ y \left (0\right ) &= 0 \\ \end{align*}

[[_linear, ‘class A‘]]

2.135

8457

\begin{align*} y^{\prime }+y&=\left \{\begin {array}{cc} 1 & 0\le x \le 1 \\ -1 & 1<x \end {array}\right . \\ y \left (0\right ) &= 1 \\ \end{align*}

[[_linear, ‘class A‘]]

2.366

8458

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

[_linear]

2.713

8459

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

[_linear]

1.888

8460

\begin{align*} y^{\prime }+\left (\left \{\begin {array}{cc} 2 & 0\le x \le 1 \\ -\frac {2}{x} & 1<x \end {array}\right .\right ) y&=4 x \\ y \left (0\right ) &= 3 \\ \end{align*}

[_linear]

6.186

8461

\begin{align*} y^{\prime }+\left (\left \{\begin {array}{cc} 1 & 0\le x \le 2 \\ 5 & 2<x \end {array}\right .\right ) y&=0 \\ y \left (0\right ) &= 4 \\ \end{align*}

[_separable]

5.112

8462

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

[_linear]

2.323

8463

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

[_linear]

2.231

8464

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

[_linear]

2.747

8465

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

[_linear]

2.612

8466

\begin{align*} 2 x^{2} y+x^{3} y^{\prime }&=10 \sin \left (x \right ) \\ y \left (1\right ) &= 0 \\ \end{align*}

[_linear]

3.129

8467

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

[_separable]

9.741

8468

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

[[_1st_order, _with_exponential_symmetries]]

3.353

8469

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

[_rational, [_1st_order, ‘_with_symmetry_[F(x)*G(y),0]‘], [_Abel, ‘2nd type‘, ‘class B‘]]

12.502

8470

\begin{align*} x y^{\prime }-4 y&=x^{6} {\mathrm e}^{x} \\ y \left (0\right ) &= 0 \\ \end{align*}

[_linear]

2.816

8471

\begin{align*} x y^{\prime }-4 y&=x^{6} {\mathrm e}^{x} \\ y \left (0\right ) &= y_{0} \\ \end{align*}

[_linear]

3.981

8472

\begin{align*} x y^{\prime }-4 y&=x^{6} {\mathrm e}^{x} \\ y \left (x_{0} \right ) &= y_{0} \\ \end{align*}

[_linear]

2.930

8473

\begin{align*} x^{\prime }&=-\lambda _{1} x \\ y^{\prime }&=\lambda _{1} x-\lambda _{2} y \\ \end{align*}

system_of_ODEs

0.542

8474

\begin{align*} e^{\prime }&=-\frac {e}{r c} \\ e \left (4\right ) &= e_{0} \\ \end{align*}

[_quadrature]

3.268

8475

\begin{align*} 2 x -1+\left (3 y+7\right ) y^{\prime }&=0 \\ \end{align*}

[_separable]

12.232

8476

\begin{align*} \left (x^{2}-25\right ) y^{\prime \prime }+2 x y^{\prime }+y&=0 \\ \end{align*}

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.628

8477

\begin{align*} \left (x^{2}-25\right ) y^{\prime \prime }+2 x y^{\prime }+y&=0 \\ \end{align*}

Series expansion around \(x=1\).

[[_2nd_order, _with_linear_symmetries]]

0.829

8478

\begin{align*} \left (x^{2}-2 x +10\right ) y^{\prime \prime }+x y^{\prime }-4 y&=0 \\ \end{align*}

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.710

8479

\begin{align*} \left (x^{2}-2 x +10\right ) y^{\prime \prime }+x y^{\prime }-4 y&=0 \\ \end{align*}

Series expansion around \(x=1\).

[[_2nd_order, _with_linear_symmetries]]

0.793

8480

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

Series expansion around \(x=0\).

[[_Emden, _Fowler]]

0.386

8481

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

Series expansion around \(x=0\).

[[_Emden, _Fowler]]

0.378

8482

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

Series expansion around \(x=0\).

[_Lienard]

0.484

8483

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

Series expansion around \(x=0\).

[_Hermite]

0.452

8484

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

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.492

8485

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

Series expansion around \(x=0\).

[[_2nd_order, _exact, _linear, _homogeneous]]

0.509

8486

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

Series expansion around \(x=0\).

[[_2nd_order, _missing_y]]

0.476

8487

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

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.734

8488

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

Series expansion around \(x=0\).

[[_2nd_order, _exact, _linear, _homogeneous]]

0.607

8489

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

Series expansion around \(x=0\).

[[_Emden, _Fowler]]

0.493

8490

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

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.563

8491

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

Series expansion around \(x=0\).

[[_2nd_order, _exact, _linear, _homogeneous]]

0.477

8492

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

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.480

8493

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

Series expansion around \(x=0\).

[[_2nd_order, _exact, _linear, _homogeneous]]

0.582

8494

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

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.471

8495

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

Series expansion around \(x=0\).

[[_2nd_order, _missing_y]]

0.470

8496

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

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.635

8497

\begin{align*} y^{\prime \prime }+{\mathrm e}^{x} y^{\prime }-y&=0 \\ \end{align*}

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.731

8498

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

Series expansion around \(x=0\).

[[_2nd_order, _exact, _linear, _homogeneous]]

0.474

8499

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

Series expansion around \(x=0\).

[[_Emden, _Fowler]]

0.200

8500

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

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

4.740