2.2.37 Problems 3601 to 3700

Table 2.91: Main lookup table. Sorted sequentially by problem number.

#

ODE

CAS classification

Solved?

Maple

Mma

Sympy

time(sec)

3601

\begin{align*} y^{\prime }&=\frac {x^{2} y-32}{-x^{2}+16}+2 \\ \end{align*}

[_separable]

4.026

3602

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

[_separable]

4.858

3603

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

[_separable]

4.407

3604

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

[_separable]

2.882

3605

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

[_separable]

5.316

3606

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

[_separable]

5.473

3607

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

[_quadrature]

1.411

3608

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

[_quadrature]

4.395

3609

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

[[_linear, ‘class A‘]]

0.234

3610

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

[_linear]

0.203

3611

\begin{align*} x^{2} y^{\prime }-4 y x&=x^{7} \sin \left (x \right ) \\ \end{align*}

[_linear]

0.259

3612

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

[_linear]

0.246

3613

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

[_linear]

0.256

3614

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

[_linear]

0.218

3615

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

[_linear]

0.421

3616

\begin{align*} y^{\prime }+\frac {y}{x \ln \left (x \right )}&=9 x^{2} \\ \end{align*}

[_linear]

0.235

3617

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

[_linear]

0.394

3618

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

[_linear]

0.211

3619

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

[_linear]

2.885

3620

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

[_linear]

0.343

3621

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

[_linear]

0.225

3622

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

[[_linear, ‘class A‘]]

0.131

3623

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

[_linear]

0.164

3624

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

[_linear]

0.332

3625

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

[_linear]

4.100

3626

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

[_linear]

3.770

3627

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

[[_linear, ‘class A‘]]

1.975

3628

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

[[_linear, ‘class A‘]]

0.843

3629

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

[[_linear, ‘class A‘]]

0.920

3630

\begin{align*} y^{\prime \prime }+\frac {y^{\prime }}{x}&=9 x \\ \end{align*}

[[_2nd_order, _missing_y]]

0.969

3631

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

[_linear]

2.026

3632

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

[[_linear, ‘class A‘]]

1.763

3633

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

[_linear]

2.803

3634

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

[_linear]

2.829

3635

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

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

5.723

3636

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

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

11.703

3637

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

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

5.334

3638

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

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

19.837

3639

\begin{align*} x y^{\prime }&=\sqrt {16 x^{2}-y^{2}}+y \\ \end{align*}

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

30.557

3640

\begin{align*} x y^{\prime }-y&=\sqrt {9 x^{2}+y^{2}} \\ \end{align*}

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

9.388

3641

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

[_separable]

0.290

3642

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

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

8.302

3643

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

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

1.921

3644

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

[[_homogeneous, ‘class A‘]]

5.908

3645

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

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

5.263

3646

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

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

12.455

3647

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

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

13.434

3648

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

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

12.047

3649

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

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

27.258

3650

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

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

39.160

3651

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

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

19.844

3652

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

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

11.933

3653

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

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

38.632

3654

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

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

20.522

3655

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

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

18.252

3656

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

[[_homogeneous, ‘class D‘], _Bernoulli]

6.803

3657

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

[_Bernoulli]

11.079

3658

\begin{align*} y^{\prime }-\frac {3 y}{2 x}&=6 y^{{1}/{3}} x^{2} \ln \left (x \right ) \\ \end{align*}

[_Bernoulli]

4.904

3659

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

[_Bernoulli]

5.477

3660

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

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

7.078

3661

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

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

11.237

3662

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

[_rational, _Bernoulli]

5.646

3663

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

[_Bernoulli]

6.441

3664

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

[_Bernoulli]

3.412

3665

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

[_Bernoulli]

4.072

3666

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

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

16.118

3667

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

[_Bernoulli]

29.720

3668

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

[_separable]

10.967

3669

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

[_rational, _Bernoulli]

2.941

3670

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

[_Bernoulli]

6.139

3671

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

[[_homogeneous, ‘class C‘], _Riccati]

3.319

3672

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

[[_homogeneous, ‘class C‘], _Riccati]

8.557

3673

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

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

5.730

3674

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

[[_homogeneous, ‘class G‘]]

5.510

3675

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

[[_1st_order, _with_linear_symmetries], _Riccati]

5.174

3676

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

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

20.117

3677

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

[_Riccati]

11.063

3678

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

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

8.036

3679

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

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

4.572

3680

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

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

3.438

3681

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

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

11.300

3682

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

[_separable]

35.721

3683

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

[‘x=_G(y,y’)‘]

2.921

3684

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

[[_homogeneous, ‘class G‘], _exact]

0.970

3685

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

[_linear]

0.286

3686

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

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

0.378

3687

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

[_separable]

0.254

3688

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

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

0.707

3689

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

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

0.621

3690

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

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

0.441

3691

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

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

0.916

3692

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

[_exact, _Bernoulli]

0.748

3693

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

[_exact]

0.422

3694

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

[_exact]

0.547

3695

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

[[_2nd_order, _missing_x]]

0.352

3696

\begin{align*} y^{\prime \prime }+7 y^{\prime }+10 y&=0 \\ \end{align*}

[[_2nd_order, _missing_x]]

0.303

3697

\begin{align*} y^{\prime \prime }-36 y&=0 \\ \end{align*}

[[_2nd_order, _missing_x]]

2.691

3698

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

[[_2nd_order, _missing_x]]

1.404

3699

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

[[_3rd_order, _missing_x]]

0.062

3700

\begin{align*} y^{\prime \prime \prime }+3 y^{\prime \prime }-4 y^{\prime }-12 y&=0 \\ \end{align*}

[[_3rd_order, _missing_x]]

0.073