2.2.85 Problems 8401 to 8500

Table 2.183: 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]

3.098

8402

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

[_separable]

4.909

8403

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

[_separable]

9.488

8404

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

[_quadrature]

4.224

8405

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

[_quadrature]

1.059

8406

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

[_separable]

3.978

8407

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

[_quadrature]

0.622

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)]‘]]

6.437

8409

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

[_quadrature]

6.158

8410

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

[_quadrature]

4.774

8411

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

[_quadrature]

2.977

8412

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

[_quadrature]

0.402

8413

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

[_separable]

0.661

8414

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

[_separable]

1.036

8415

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

[_separable]

0.963

8416

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

[_separable]

0.647

8417

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

[_separable]

2.099

8418

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

[_separable]

3.907

8419

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

[_separable]

2.564

8420

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

[_quadrature]

0.852

8421

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

[_quadrature]

0.705

8422

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

[[_linear, ‘class A‘]]

1.448

8423

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

[_quadrature]

0.557

8424

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

[_separable]

2.343

8425

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

[_linear]

2.332

8426

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

[_linear]

2.033

8427

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

[[_linear, ‘class A‘]]

1.960

8428

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

[_linear]

2.524

8429

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

[_separable]

3.507

8430

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

[_linear]

2.444

8431

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

[_linear]

1.744

8432

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

[_linear]

2.004

8433

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

[_linear]

3.467

8434

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

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

4.999

8435

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

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

1.933

8436

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

[_linear]

2.241

8437

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

[_linear]

5.204

8438

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

[_linear]

2.180

8439

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

[_linear]

2.683

8440

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

[_linear]

2.241

8441

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

[_separable]

2.615

8442

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

[_linear]

3.155

8443

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

[_linear]

2.352

8444

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

[[_linear, ‘class A‘]]

1.254

8445

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

[[_linear, ‘class A‘]]

1.230

8446

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

[_linear]

2.026

8447

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

[_rational, _Bernoulli]

2.657

8448

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

[_quadrature]

1.590

8449

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

[_quadrature]

1.437

8450

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

[_linear]

2.197

8451

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

[_linear]

2.056

8452

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

[_linear]

2.081

8453

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

[_linear]

1.684

8454

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

[_separable]

4.026

8455

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

[_linear]

2.401

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‘]]

1.572

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‘]]

1.477

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]

1.747

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]

1.284

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]

3.661

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]

3.174

8462

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

[_linear]

1.617

8463

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

[_linear]

1.542

8464

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

[_linear]

1.884

8465

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

[_linear]

1.829

8466

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

[_linear]

2.438

8467

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

[_separable]

5.282

8468

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

[[_1st_order, _with_exponential_symmetries]]

2.006

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‘]]

1.889

8470

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

[_linear]

2.816

8471

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

[_linear]

2.557

8472

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

[_linear]

2.224

8473

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

system_of_ODEs

0.451

8474

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

[_quadrature]

2.032

8475

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

[_separable]

6.073

8476

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

[[_2nd_order, _with_linear_symmetries]]

0.457

8477

\begin{align*} \left (x^{2}-25\right ) y^{\prime \prime }+2 y^{\prime } x +y&=0 \\ \end{align*}
Series expansion around \(x=1\).

[[_2nd_order, _with_linear_symmetries]]

0.615

8478

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

[[_2nd_order, _with_linear_symmetries]]

0.539

8479

\begin{align*} \left (x^{2}-2 x +10\right ) y^{\prime \prime }+y^{\prime } x -4 y&=0 \\ \end{align*}
Series expansion around \(x=1\).

[[_2nd_order, _with_linear_symmetries]]

0.602

8480

\begin{align*} y^{\prime \prime }-y x&=0 \\ \end{align*}
Series expansion around \(x=0\).

[[_Emden, _Fowler]]

0.271

8481

\begin{align*} y^{\prime \prime }+x^{2} y&=0 \\ \end{align*}
Series expansion around \(x=0\).

[[_Emden, _Fowler]]

0.275

8482

\begin{align*} y^{\prime \prime }-2 y^{\prime } x +y&=0 \\ \end{align*}
Series expansion around \(x=0\).

[_Lienard]

0.368

8483

\begin{align*} 2 y-y^{\prime } x +y^{\prime \prime }&=0 \\ \end{align*}
Series expansion around \(x=0\).

[_Hermite]

0.320

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]]

0.371

8485

\begin{align*} y^{\prime \prime }+2 y^{\prime } x +2 y&=0 \\ \end{align*}
Series expansion around \(x=0\).

[[_2nd_order, _exact, _linear, _homogeneous]]

0.373

8486

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

[[_2nd_order, _missing_y]]

0.347

8487

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

[[_2nd_order, _with_linear_symmetries]]

0.402

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]]

0.444

8489

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

[[_Emden, _Fowler]]

0.374

8490

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

[[_2nd_order, _with_linear_symmetries]]

0.428

8491

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

[[_2nd_order, _exact, _linear, _homogeneous]]

0.364

8492

\begin{align*} \left (x -1\right ) y^{\prime \prime }-y^{\prime } x +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]]

0.348

8493

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

0.432

8494

\begin{align*} y^{\prime \prime }-2 y^{\prime } x +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]]

0.350

8495

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

[[_2nd_order, _missing_y]]

0.378

8496

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

[[_2nd_order, _with_linear_symmetries]]

0.460

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]]

0.566

8498

\begin{align*} y^{\prime \prime }+y^{\prime } x +y&=0 \\ \end{align*}
Series expansion around \(x=0\).

[[_2nd_order, _exact, _linear, _homogeneous]]

0.355

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]]

0.134

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]]

2.927