2.2.133 Problems 13201 to 13300

Table 2.267: Main lookup table. Sorted sequentially by problem number.

#

ODE

CAS classification

Solved?

time (sec)

13201

\[ {}x^{\prime \prime }-x = \delta \left (t -5\right ) \]
i.c.

[[_2nd_order, _linear, _nonhomogeneous]]

0.319

13202

\[ {}x^{\prime \prime }+x = \delta \left (t -2\right ) \]
i.c.

[[_2nd_order, _linear, _nonhomogeneous]]

0.332

13203

\[ {}x^{\prime \prime }+4 x = \delta \left (t -2\right )-\delta \left (t -5\right ) \]
i.c.

[[_2nd_order, _linear, _nonhomogeneous]]

1.167

13204

\[ {}x^{\prime \prime }+x = 3 \delta \left (t -2 \pi \right ) \]
i.c.

[[_2nd_order, _linear, _nonhomogeneous]]

0.489

13205

\[ {}y^{\prime \prime }+y^{\prime }+y = \delta \left (t -1\right ) \]
i.c.

[[_2nd_order, _linear, _nonhomogeneous]]

0.620

13206

\[ {}x^{\prime \prime }+4 x = \frac {\left (t -5\right ) \operatorname {Heaviside}\left (t -5\right )}{5}+\left (2-\frac {t}{5}\right ) \operatorname {Heaviside}\left (t -10\right ) \]
i.c.

[[_2nd_order, _linear, _nonhomogeneous]]

0.933

13207

\[ {}\left [\begin {array}{c} x^{\prime }=-3 y \\ y^{\prime }=2 x \end {array}\right ] \]

system_of_ODEs

0.528

13208

\[ {}\left [\begin {array}{c} x^{\prime }=-2 y \\ y^{\prime }=-4 x \end {array}\right ] \]

system_of_ODEs

0.512

13209

\[ {}\left [\begin {array}{c} x^{\prime }=-3 x \\ y^{\prime }=2 y \end {array}\right ] \]

system_of_ODEs

0.357

13210

\[ {}\left [\begin {array}{c} x^{\prime }=4 y \\ y^{\prime }=2 y \end {array}\right ] \]

system_of_ODEs

0.365

13211

\[ {}\left [\begin {array}{c} x^{\prime }=x \\ y^{\prime }=x+2 y \end {array}\right ] \]

system_of_ODEs

0.412

13212

\[ {}\left [\begin {array}{c} x^{\prime }=x-y \\ y^{\prime }=x+y \end {array}\right ] \]

system_of_ODEs

0.443

13213

\[ {}\left [\begin {array}{c} x^{\prime }=x+2 y \\ y^{\prime }=x \end {array}\right ] \]

system_of_ODEs

0.411

13214

\[ {}\left [\begin {array}{c} x^{\prime }=-x-2 y \\ y^{\prime }=2 x-y \end {array}\right ] \]

system_of_ODEs

0.469

13215

\[ {}\left [\begin {array}{c} x^{\prime }=-2 x-3 y \\ y^{\prime }=-x+4 y \end {array}\right ] \]

system_of_ODEs

0.622

13216

\[ {}\left [\begin {array}{c} x^{\prime }=-3 y \\ y^{\prime }=-2 x+y \end {array}\right ] \]

system_of_ODEs

0.435

13217

\[ {}\left [\begin {array}{c} x^{\prime }=-2 x \\ y^{\prime }=x \end {array}\right ] \]

system_of_ODEs

0.378

13218

\[ {}\left [\begin {array}{c} x^{\prime }=-2 x-y \\ y^{\prime }=-4 y \end {array}\right ] \]

system_of_ODEs

0.392

13219

\[ {}\left [\begin {array}{c} x^{\prime }=x-2 y \\ y^{\prime }=-2 x+4 y \end {array}\right ] \]

system_of_ODEs

0.407

13220

\[ {}\left [\begin {array}{c} x^{\prime }=-6 y \\ y^{\prime }=6 y \end {array}\right ] \]

system_of_ODEs

0.389

13221

\[ {}\left [\begin {array}{c} x^{\prime }=2 x+3 y \\ y^{\prime }=-x-14 \end {array}\right ] \]

system_of_ODEs

1.112

13222

\[ {}\left [\begin {array}{c} x^{\prime }=3 y-3 x \\ y^{\prime }=x+2 y-1 \end {array}\right ] \]

system_of_ODEs

0.917

13223

\[ {}\left [\begin {array}{c} x^{\prime }=y-x \\ y^{\prime }=-3 y \end {array}\right ] \]

system_of_ODEs

0.407

13224

\[ {}\left [\begin {array}{c} x^{\prime }=x \\ y^{\prime }=3 x-4 y \end {array}\right ] \]

system_of_ODEs

0.412

13225

\[ {}\left [\begin {array}{c} x^{\prime }=y-x \\ y^{\prime }=x-2 y \end {array}\right ] \]

system_of_ODEs

0.622

13226

\[ {}\left [\begin {array}{c} x^{\prime }=x+y \\ y^{\prime }=3 y-3 x \end {array}\right ] \]

system_of_ODEs

0.727

13227

\[ {}\left [\begin {array}{c} x^{\prime }=x-2 y \\ y^{\prime }=3 x-4 y \end {array}\right ] \]
i.c.

system_of_ODEs

0.550

13228

\[ {}\left [\begin {array}{c} x^{\prime }=5 x-y \\ y^{\prime }=3 x+y \end {array}\right ] \]
i.c.

system_of_ODEs

0.536

13229

\[ {}\left [\begin {array}{c} x^{\prime }=-3 x+y \\ y^{\prime }=-3 y \end {array}\right ] \]

system_of_ODEs

0.364

13230

\[ {}\left [\begin {array}{c} x^{\prime }=x-y \\ y^{\prime }=x+3 y \end {array}\right ] \]

system_of_ODEs

0.391

13231

\[ {}\left [\begin {array}{c} x^{\prime }=x+2 y \\ y^{\prime }=3 x+2 y \end {array}\right ] \]

system_of_ODEs

0.433

13232

\[ {}\left [\begin {array}{c} x^{\prime }=-3 x+4 y \\ y^{\prime }=-3 y \end {array}\right ] \]

system_of_ODEs

0.390

13233

\[ {}\left [\begin {array}{c} x^{\prime }=2 x+2 y \\ y^{\prime }=6 x+3 y \end {array}\right ] \]

system_of_ODEs

0.432

13234

\[ {}\left [\begin {array}{c} x^{\prime }=-5 x+3 y \\ y^{\prime }=2 x-10 y \end {array}\right ] \]

system_of_ODEs

0.413

13235

\[ {}\left [\begin {array}{c} x^{\prime }=2 x \\ y^{\prime }=2 y \end {array}\right ] \]

system_of_ODEs

0.329

13236

\[ {}\left [\begin {array}{c} x^{\prime }=3 x-2 y \\ y^{\prime }=4 x-y \end {array}\right ] \]

system_of_ODEs

0.491

13237

\[ {}\left [\begin {array}{c} x^{\prime }=5 x-4 y \\ y^{\prime }=x+y \end {array}\right ] \]

system_of_ODEs

0.380

13238

\[ {}\left [\begin {array}{c} x^{\prime }=9 y \\ y^{\prime }=-x \end {array}\right ] \]

system_of_ODEs

0.432

13239

\[ {}\left [\begin {array}{c} x^{\prime }=2 x+y \\ y^{\prime }=-x \end {array}\right ] \]
i.c.

system_of_ODEs

0.490

13240

\[ {}\left [\begin {array}{c} x^{\prime }=x-2 y \\ y^{\prime }=-2 x+4 y \end {array}\right ] \]

system_of_ODEs

0.404

13241

\[ {}\left [\begin {array}{c} x^{\prime }=3 x-y+1 \\ y^{\prime }=x+y+2 \end {array}\right ] \]
i.c.

system_of_ODEs

0.669

13242

\[ {}\left [\begin {array}{c} x^{\prime }=-5 x+3 y+{\mathrm e}^{-t} \\ y^{\prime }=2 x-10 y \end {array}\right ] \]

system_of_ODEs

0.497

13243

\[ {}\left [\begin {array}{c} x^{\prime }=y \\ y^{\prime }=-x+\cos \left (w t \right ) \end {array}\right ] \]

system_of_ODEs

0.662

13244

\[ {}\left [\begin {array}{c} x^{\prime }=3 x+2 y+3 \\ y^{\prime }=7 x+5 y+2 t \end {array}\right ] \]

system_of_ODEs

0.864

13245

\[ {}\left [\begin {array}{c} x^{\prime }=x-3 y \\ y^{\prime }=3 x+7 y \end {array}\right ] \]

system_of_ODEs

0.392

13246

\[ {}y^{\prime }+y = x +1 \]

[[_linear, ‘class A‘]]

1.465

13247

\[ {}y^{\prime \prime }-7 y^{\prime }+12 y = 0 \]

[[_2nd_order, _missing_x]]

1.076

13248

\[ {}y^{\prime \prime }-3 y^{\prime }+2 y = 4 x^{2} \]

[[_2nd_order, _with_linear_symmetries]]

1.321

13249

\[ {}\left (x^{2}+1\right ) y^{\prime \prime }+4 y^{\prime } x +2 y = 0 \]

[[_2nd_order, _exact, _linear, _homogeneous]]

1.050

13250

\[ {}2 x y y^{\prime }+x^{2}+y^{2} = 0 \]

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

4.311

13251

\[ {}y^{\prime } x +y = x^{3} y^{3} \]

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

2.821

13252

\[ {}y^{\prime }+3 y = 3 x^{2} {\mathrm e}^{-3 x} \]

[[_linear, ‘class A‘]]

1.681

13253

\[ {}y^{\prime }+4 x y = 8 x \]

[_separable]

1.444

13254

\[ {}y^{\prime \prime }-2 y^{\prime }-8 y = 0 \]

[[_2nd_order, _missing_x]]

1.079

13255

\[ {}y^{\prime \prime \prime }-2 y^{\prime \prime }-4 y^{\prime }+8 y = 0 \]

[[_3rd_order, _missing_x]]

0.071

13256

\[ {}y^{\prime \prime \prime }-3 y^{\prime \prime }-4 y^{\prime }+12 y = 0 \]

[[_3rd_order, _missing_x]]

0.070

13257

\[ {}x^{3} y^{\prime \prime \prime }+2 x^{2} y^{\prime \prime }-10 y^{\prime } x -8 y = 0 \]

[[_3rd_order, _fully, _exact, _linear]]

0.129

13258

\[ {}y^{\prime }+2 y = 6 \,{\mathrm e}^{x}+4 x \,{\mathrm e}^{-2 x} \]

[[_linear, ‘class A‘]]

1.579

13259

\[ {}y^{\prime \prime }-4 y^{\prime }+4 y = -8 \sin \left (2 x \right ) \]

[[_2nd_order, _linear, _nonhomogeneous]]

1.704

13260

\[ {}{y^{\prime }}^{2}-4 y = 0 \]

[_quadrature]

0.549

13261

\[ {}y^{\prime \prime }+y^{\prime }-6 y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

1.640

13262

\[ {}y^{\prime }+y = 2 x \,{\mathrm e}^{-x} \]
i.c.

[[_linear, ‘class A‘]]

1.987

13263

\[ {}y^{\prime }+y = 2 x \,{\mathrm e}^{-x} \]
i.c.

[[_linear, ‘class A‘]]

2.000

13264

\[ {}y^{\prime \prime }-y^{\prime }-12 y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

1.681

13265

\[ {}y^{\prime \prime }+y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

1.842

13266

\[ {}y^{\prime \prime }+y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

1.879

13267

\[ {}y^{\prime \prime }+y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

2.151

13268

\[ {}x^{3} y^{\prime \prime \prime }-3 x^{2} y^{\prime \prime }+6 y^{\prime } x -6 y = 0 \]
i.c.

[[_3rd_order, _with_linear_symmetries]]

0.198

13269

\[ {}y^{\prime } = x^{2} \sin \left (y\right ) \]
i.c.

[_separable]

3.421

13270

\[ {}y^{\prime } = \frac {y^{2}}{x -2} \]
i.c.

[_separable]

2.478

13271

\[ {}y^{\prime } = y^{{1}/{3}} \]
i.c.

[_quadrature]

1.996

13272

\[ {}3 x +2 y+\left (2 x +y\right ) y^{\prime } = 0 \]

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

4.966

13273

\[ {}y^{2}+3+\left (2 x y-4\right ) y^{\prime } = 0 \]

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

1.420

13274

\[ {}2 x y+1+\left (x^{2}+4 y\right ) y^{\prime } = 0 \]

[_exact, _rational, [_1st_order, ‘_with_symmetry_[F(x),G(x)]‘], [_Abel, ‘2nd type‘, ‘class A‘]]

1.207

13275

\[ {}3 x^{2} y+2-\left (x^{3}+y\right ) y^{\prime } = 0 \]

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

1.149

13276

\[ {}6 x y+2 y^{2}-5+\left (3 x^{2}+4 x y-6\right ) y^{\prime } = 0 \]

[_exact, _rational, [_Abel, ‘2nd type‘, ‘class B‘]]

1.551

13277

\[ {}y \sec \left (x \right )^{2}+\sec \left (x \right ) \tan \left (x \right )+\left (\tan \left (x \right )+2 y\right ) y^{\prime } = 0 \]

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

11.138

13278

\[ {}\frac {x}{y^{2}}+x +\left (\frac {x^{2}}{y^{3}}+y\right ) y^{\prime } = 0 \]

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

2.287

13279

\[ {}\frac {\left (2 s-1\right ) s^{\prime }}{t}+\frac {s-s^{2}}{t^{2}} = 0 \]

[_separable]

3.434

13280

\[ {}\frac {2 y^{{3}/{2}}+1}{\sqrt {x}}+\left (3 \sqrt {x}\, \sqrt {y}-1\right ) y^{\prime } = 0 \]

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

2.633

13281

\[ {}2 x y-3+\left (x^{2}+4 y\right ) y^{\prime } = 0 \]
i.c.

[_exact, _rational, [_1st_order, ‘_with_symmetry_[F(x),G(x)]‘], [_Abel, ‘2nd type‘, ‘class A‘]]

1.622

13282

\[ {}3 x^{2} y^{2}-y^{3}+2 x +\left (2 x^{3} y-3 x y^{2}+1\right ) y^{\prime } = 0 \]
i.c.

[_exact, _rational]

5.303

13283

\[ {}2 y \sin \left (x \right ) \cos \left (x \right )+y^{2} \sin \left (x \right )+\left (\sin \left (x \right )^{2}-2 y \cos \left (x \right )\right ) y^{\prime } = 0 \]
i.c.

[_exact, [_Abel, ‘2nd type‘, ‘class B‘]]

76.670

13284

\[ {}y \,{\mathrm e}^{x}+2 \,{\mathrm e}^{x}+y^{2}+\left ({\mathrm e}^{x}+2 x y\right ) y^{\prime } = 0 \]
i.c.

[_exact, [_Abel, ‘2nd type‘, ‘class B‘]]

3.099

13285

\[ {}\frac {3-y}{x^{2}}+\frac {\left (y^{2}-2 x \right ) y^{\prime }}{x y^{2}} = 0 \]
i.c.

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

3.220

13286

\[ {}\frac {1+8 x y^{{2}/{3}}}{x^{{2}/{3}} y^{{1}/{3}}}+\frac {\left (2 x^{{4}/{3}} y^{{2}/{3}}-x^{{1}/{3}}\right ) y^{\prime }}{y^{{4}/{3}}} = 0 \]
i.c.

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

4.495

13287

\[ {}4 x +3 y^{2}+2 x y y^{\prime } = 0 \]

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

2.337

13288

\[ {}y^{2}+2 x y-x^{2} y^{\prime } = 0 \]

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

2.881

13289

\[ {}y+x \left (x^{2}+y^{2}\right )^{2}+\left (y \left (x^{2}+y^{2}\right )^{2}-x \right ) y^{\prime } = 0 \]

[[_1st_order, _with_linear_symmetries], _rational]

1.882

13290

\[ {}4 x y+\left (x^{2}+1\right ) y^{\prime } = 0 \]

[_separable]

1.766

13291

\[ {}x y+2 x +y+2+\left (x^{2}+2 x \right ) y^{\prime } = 0 \]

[_separable]

1.669

13292

\[ {}2 r \left (s^{2}+1\right )+\left (r^{4}+1\right ) s^{\prime } = 0 \]

[_separable]

2.434

13293

\[ {}\csc \left (y\right )+\sec \left (x \right ) y^{\prime } = 0 \]

[_separable]

2.340

13294

\[ {}\tan \left (\theta \right )+2 r \theta ^{\prime } = 0 \]

[_separable]

2.633

13295

\[ {}\left ({\mathrm e}^{v}+1\right ) \cos \left (u \right )+{\mathrm e}^{v} \left (1+\sin \left (u \right )\right ) v^{\prime } = 0 \]

[_separable]

2.692

13296

\[ {}\left (x +4\right ) \left (1+y^{2}\right )+y \left (x^{2}+3 x +2\right ) y^{\prime } = 0 \]

[_separable]

2.402

13297

\[ {}x +y-y^{\prime } x = 0 \]

[_linear]

1.501

13298

\[ {}2 x y+3 y^{2}-\left (2 x y+x^{2}\right ) y^{\prime } = 0 \]

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

4.259

13299

\[ {}v^{3}+\left (u^{3}-u v^{2}\right ) v^{\prime } = 0 \]

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

16.179

13300

\[ {}x \tan \left (\frac {y}{x}\right )+y-y^{\prime } x = 0 \]

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

4.615