2.2.143 Problems 14201 to 14300

Table 2.303: Main lookup table. Sorted sequentially by problem number.

#

ODE

CAS classification

Solved?

Maple

Mma

Sympy

time(sec)

14201

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

[_quadrature]

3.579

14202

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

[[_Riccati, _special]]

14.314

14203

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

[_quadrature]

1.329

14204

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

[_quadrature]

0.965

14205

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

[[_2nd_order, _quadrature]]

2.302

14206

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

[_quadrature]

0.569

14207

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

[_quadrature]

0.862

14208

\begin{align*} \sqrt {t}\, x^{\prime }&=\cos \left (\sqrt {t}\right ) \\ \end{align*}

[_quadrature]

0.794

14209

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

[_quadrature]

1.153

14210

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

[[_2nd_order, _missing_y]]

2.342

14211

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

[_quadrature]

5.046

14212

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

[_quadrature]

3.075

14213

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

[_quadrature]

5.562

14214

\begin{align*} u^{\prime }&=\frac {1}{5-2 u} \\ \end{align*}

[_quadrature]

3.603

14215

\begin{align*} x^{\prime }&=a x+b \\ \end{align*}

[_quadrature]

2.002

14216

\begin{align*} Q^{\prime }&=\frac {Q}{4+Q^{2}} \\ \end{align*}

[_quadrature]

1.438

14217

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

[_quadrature]

4.293

14218

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

[_quadrature]

2.017

14219

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

[_separable]

6.390

14220

\begin{align*} \theta ^{\prime }&=t \sqrt {t^{2}+1}\, \sec \left (\theta \right ) \\ \end{align*}

[_separable]

4.493

14221

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

[_separable]

15.597

14222

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

[_separable]

7.027

14223

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

[_quadrature]

2.524

14224

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

[_separable]

4.839

14225

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

[_quadrature]

1.513

14226

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

[[_homogeneous, ‘class C‘], _Riccati]

6.445

14227

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

[_separable]

13.350

14228

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

[_separable]

8.334

14229

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

[_quadrature]

3.325

14230

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

[_separable]

7.116

14231

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

[_separable]

9.295

14232

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

[_separable]

13.732

14233

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

[_separable]

6.681

14234

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

[_separable]

7.769

14235

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

[_separable]

10.259

14236

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

[_separable]

11.272

14237

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

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

20.826

14238

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

[[_linear, ‘class A‘]]

3.799

14239

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

[[_2nd_order, _missing_y]]

1.444

14240

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

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

11.196

14241

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

[_separable]

6.388

14242

\begin{align*} x^{\prime }&=2 t^{3} x-6 \\ \end{align*}

[_linear]

3.188

14243

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

[_separable]

5.976

14244

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

[[_Riccati, _special]]

8.874

14245

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

[_linear]

2.870

14246

\begin{align*} x x^{\prime }&=1-x t \\ \end{align*}

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

15.672

14247

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

[‘y=_G(x,y’)‘]

60.183

14248

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

[_linear]

7.506

14249

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

[[_linear, ‘class A‘]]

3.161

14250

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

[_linear]

4.240

14251

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

[_linear]

7.105

14252

\begin{align*} \theta ^{\prime }&=-a \theta +{\mathrm e}^{b t} \\ \end{align*}

[[_linear, ‘class A‘]]

4.648

14253

\begin{align*} \left (t^{2}+1\right ) x^{\prime }&=-3 x t +6 t \\ \end{align*}

[_separable]

6.000

14254

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

[_linear]

5.203

14255

\begin{align*} x^{\prime }&=\left (a +\frac {b}{t}\right ) x \\ x \left (1\right ) &= 1 \\ \end{align*}

[_separable]

5.264

14256

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

[_linear]

3.471

14257

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

[[_linear, ‘class A‘]]

3.329

14258

\begin{align*} \cos \left (\theta \right ) v^{\prime }+v&=3 \\ \end{align*}

[_separable]

7.405

14259

\begin{align*} R^{\prime }&=\frac {R}{t}+t \,{\mathrm e}^{-t} \\ R \left (1\right ) &= 1 \\ \end{align*}

[_linear]

4.690

14260

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

[[_linear, ‘class A‘]]

3.252

14261

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

[_separable]

5.854

14262

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

[_linear]

4.755

14263

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

[[_2nd_order, _missing_y]]

1.639

14264

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

[[_homogeneous, ‘class C‘], _Riccati]

3.963

14265

\begin{align*} x^{\prime }&=a x+b \\ \end{align*}

[_quadrature]

1.865

14266

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

[_separable]

5.874

14267

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

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

68.100

14268

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

[[_1st_order, _with_linear_symmetries], _Bernoulli]

4.092

14269

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

[_separable]

11.992

14270

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

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

27.270

14271

\begin{align*} x^{\prime }&=a x+b x^{3} \\ \end{align*}

[_quadrature]

25.169

14272

\begin{align*} w^{\prime }&=t w+t^{3} w^{3} \\ \end{align*}

[_Bernoulli]

5.393

14273

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

[_separable]

0.305

14274

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

[_exact]

4.758

14275

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

[NONE]

28.617

14276

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

[_separable]

1.701

14277

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

[_separable]

11.280

14278

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

[_separable]

10.963

14279

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

[[_2nd_order, _missing_x]]

0.825

14280

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

[[_2nd_order, _missing_x]]

3.198

14281

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

[[_2nd_order, _missing_x]]

0.760

14282

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

[[_2nd_order, _missing_x]]

0.632

14283

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

[[_2nd_order, _missing_x]]

0.783

14284

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

[[_2nd_order, _missing_x]]

2.050

14285

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

[[_2nd_order, _missing_x]]

0.762

14286

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

[[_2nd_order, _missing_x]]

0.595

14287

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

[[_2nd_order, _missing_x]]

0.911

14288

\begin{align*} x^{\prime \prime }-4 x^{\prime }+6 x&=0 \\ x \left (0\right ) &= 1 \\ x^{\prime }\left (0\right ) &= 0 \\ \end{align*}

[[_2nd_order, _missing_x]]

0.842

14289

\begin{align*} x^{\prime \prime }+9 x&=0 \\ x \left (0\right ) &= 1 \\ x^{\prime }\left (0\right ) &= 0 \\ \end{align*}

[[_2nd_order, _missing_x]]

4.380

14290

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

[[_2nd_order, _missing_x]]

5.926

14291

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

[[_2nd_order, _missing_x]]

0.864

14292

\begin{align*} \frac {x^{\prime \prime }}{2}+\frac {5 x^{\prime }}{6}+\frac {2 x}{9}&=0 \\ x \left (0\right ) &= 1 \\ x^{\prime }\left (0\right ) &= 0 \\ \end{align*}

[[_2nd_order, _missing_x]]

0.615

14293

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

[[_2nd_order, _missing_x]]

0.819

14294

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

[[_2nd_order, _missing_x]]

0.880

14295

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

[[_2nd_order, _linear, _nonhomogeneous]]

0.769

14296

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

[[_2nd_order, _linear, _nonhomogeneous]]

0.767

14297

\begin{align*} x^{\prime \prime }+x^{\prime }+x&=12 \\ \end{align*}

[[_2nd_order, _missing_x]]

0.651

14298

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

[[_2nd_order, _linear, _nonhomogeneous]]

0.780

14299

\begin{align*} x^{\prime \prime }+x^{\prime }+x&=5 \sin \left (7 t \right ) \\ \end{align*}

[[_2nd_order, _linear, _nonhomogeneous]]

0.786

14300

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

[[_2nd_order, _linear, _nonhomogeneous]]

2.437