2.2.159 Problems 15801 to 15900

Table 2.331: Main lookup table. Sorted sequentially by problem number.

#

ODE

CAS classification

Solved?

Maple

Mma

Sympy

time(sec)

15801

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

[_quadrature]

0.522

15802

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

[_separable]

3.634

15803

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

[_separable]

3.008

15804

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

[_quadrature]

1.335

15805

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

[_separable]

4.682

15806

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

[_quadrature]

0.523

15807

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

[_separable]

4.212

15808

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

[_quadrature]

2.224

15809

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

[_quadrature]

0.186

15810

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

[_quadrature]

0.184

15811

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

[_quadrature]

0.388

15812

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

[_quadrature]

1.473

15813

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

[_quadrature]

1.141

15814

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

[[_linear, ‘class A‘]]

1.162

15815

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

[_quadrature]

1.243

15816

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

[[_linear, ‘class A‘]]

1.301

15817

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

[_Riccati]

3.145

15818

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

[_separable]

3.303

15819

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

[_quadrature]

17.604

15820

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

[_quadrature]

17.295

15821

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

[_quadrature]

18.673

15822

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

[_quadrature]

17.738

15823

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

[_quadrature]

17.214

15824

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

[_quadrature]

1.241

15825

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

[_quadrature]

1.064

15826

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

[_quadrature]

9.630

15827

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

[_quadrature]

0.193

15828

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

[_separable]

4.967

15829

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

[_separable]

3.434

15830

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

[_separable]

3.365

15831

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

[_quadrature]

0.189

15832

\begin{align*} \theta ^{\prime }&=\frac {9}{10}-\frac {11 \cos \left (\theta \right )}{10} \\ \end{align*}

[_quadrature]

26.991

15833

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

[_quadrature]

0.429

15834

\begin{align*} \theta ^{\prime }&=\frac {11}{10}-\frac {9 \cos \left (\theta \right )}{10} \\ \end{align*}

[_quadrature]

25.327

15835

\begin{align*} v^{\prime }&=-\frac {v}{R C} \\ \end{align*}

[_quadrature]

0.797

15836

\begin{align*} v^{\prime }&=\frac {K -v}{R C} \\ \end{align*}

[_quadrature]

0.374

15837

\begin{align*} v^{\prime }&=2 V \left (t \right )-2 v \\ \end{align*}

[[_linear, ‘class A‘]]

1.436

15838

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

[_quadrature]

0.625

15839

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

[[_Riccati, _special]]

4.011

15840

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

[[_Riccati, _special]]

4.164

15841

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

[_quadrature]

9.283

15842

\begin{align*} w^{\prime }&=\left (3-w\right ) \left (w+1\right ) \\ w \left (0\right ) &= 4 \\ \end{align*}

[_quadrature]

0.724

15843

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

[_quadrature]

0.626

15844

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

[_quadrature]

0.815

15845

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

[_quadrature]

0.631

15846

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

[_quadrature]

11.691

15847

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

[_Abel]

0.916

15848

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

[_quadrature]

2.919

15849

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

[_quadrature]

0.625

15850

\begin{align*} \theta ^{\prime }&=\frac {9}{10}-\frac {11 \cos \left (\theta \right )}{10} \\ \theta \left (0\right ) &= 1 \\ \end{align*}

[_quadrature]

27.807

15851

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

[_quadrature]

2.383

15852

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

[_quadrature]

2.457

15853

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

[_quadrature]

2.637

15854

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

[_quadrature]

1.413

15855

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

[_quadrature]

0.835

15856

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

[_quadrature]

29.974

15857

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

[_separable]

1.873

15858

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

[_quadrature]

0.413

15859

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

[_separable]

2.158

15860

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

[_quadrature]

2.007

15861

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

[_quadrature]

1.047

15862

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

[_quadrature]

0.924

15863

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

[_quadrature]

1.475

15864

\begin{align*} y^{\prime }&=y^{2}-4 y-12 \\ y \left (0\right ) &= 1 \\ \end{align*}

[_quadrature]

0.807

15865

\begin{align*} y^{\prime }&=y^{2}-4 y-12 \\ y \left (1\right ) &= 0 \\ \end{align*}

[_quadrature]

0.804

15866

\begin{align*} y^{\prime }&=y^{2}-4 y-12 \\ y \left (0\right ) &= 6 \\ \end{align*}

[_quadrature]

1.344

15867

\begin{align*} y^{\prime }&=y^{2}-4 y-12 \\ y \left (0\right ) &= 5 \\ \end{align*}

[_quadrature]

0.743

15868

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

[_quadrature]

0.811

15869

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

[_quadrature]

25.457

15870

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

[_quadrature]

1.858

15871

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

[_quadrature]

0.743

15872

\begin{align*} w^{\prime }&=w \cos \left (w\right ) \\ \end{align*}

[_quadrature]

1.711

15873

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

[_quadrature]

1.690

15874

\begin{align*} w^{\prime }&=w \cos \left (w\right ) \\ w \left (3\right ) &= 1 \\ \end{align*}

[_quadrature]

1.852

15875

\begin{align*} w^{\prime }&=w \cos \left (w\right ) \\ w \left (0\right ) &= 2 \\ \end{align*}

[_quadrature]

1.827

15876

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

[_quadrature]

1.830

15877

\begin{align*} w^{\prime }&=\left (1-w\right ) \sin \left (w\right ) \\ \end{align*}

[_quadrature]

1.840

15878

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

[_quadrature]

0.666

15879

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

[_quadrature]

0.308

15880

\begin{align*} w^{\prime }&=3 w^{3}-12 w^{2} \\ \end{align*}

[_quadrature]

11.320

15881

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

[_quadrature]

0.898

15882

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

[_quadrature]

1.999

15883

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

[_quadrature]

8.896

15884

\begin{align*} w^{\prime }&=\left (w^{2}-2\right ) \arctan \left (w\right ) \\ \end{align*}

[_quadrature]

2.584

15885

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

[_quadrature]

0.676

15886

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

[_quadrature]

0.410

15887

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

[_quadrature]

0.565

15888

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

[_quadrature]

0.582

15889

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

[_quadrature]

0.559

15890

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

[_quadrature]

0.534

15891

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

[_quadrature]

1.293

15892

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

[_quadrature]

0.985

15893

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

[_quadrature]

1.342

15894

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

[_quadrature]

14.979

15895

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

[_quadrature]

3.971

15896

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

[_quadrature]

0.527

15897

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

[_quadrature]

1.019

15898

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

[_quadrature]

12.395

15899

\begin{align*} y^{\prime }&=-4 y+9 \,{\mathrm e}^{-t} \\ \end{align*}

[[_linear, ‘class A‘]]

1.243

15900

\begin{align*} y^{\prime }&=-4 y+3 \,{\mathrm e}^{-t} \\ \end{align*}

[[_linear, ‘class A‘]]

1.099