2.2.194 Problems 19301 to 19400

Table 2.389: Main lookup table. Sorted sequentially by problem number.

#

ODE

CAS classification

Solved?

time (sec)

19301

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

[[_2nd_order, _missing_y]]

0.761

19302

\[ {}y^{\prime \prime } = \sqrt {1+{y^{\prime }}^{2}} \]

[[_2nd_order, _missing_x]]

3.770

19303

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

[[_2nd_order, _missing_y]]

1.738

19304

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

[[_2nd_order, _missing_y]]

0.531

19305

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

[[_3rd_order, _missing_y]]

0.176

19306

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

[[_2nd_order, _missing_y]]

1.500

19307

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

[[_2nd_order, _missing_y]]

1.215

19308

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

[[_2nd_order, _missing_y]]

34.424

19309

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

[[_2nd_order, _missing_y], _Liouville, [_2nd_order, _reducible, _mu_xy]]

0.427

19310

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

[[_3rd_order, _missing_y]]

0.282

19311

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

[[_2nd_order, _missing_y]]

0.893

19312

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

[[_2nd_order, _missing_y]]

0.921

19313

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

[[_2nd_order, _missing_y]]

1.687

19314

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

[[_2nd_order, _missing_x], [_2nd_order, _exact, _nonlinear], _Lagerstrom, [_2nd_order, _reducible, _mu_x_y1], [_2nd_order, _reducible, _mu_xy]]

1.018

19315

\[ {}y y^{\prime \prime }+{y^{\prime }}^{2} = 1 \]

[[_2nd_order, _missing_x], [_2nd_order, _exact, _nonlinear], [_2nd_order, _reducible, _mu_x_y1], [_2nd_order, _reducible, _mu_xy]]

3.112

19316

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

[[_2nd_order, _missing_x], [_2nd_order, _reducible, _mu_x_y1], [_2nd_order, _reducible, _mu_xy]]

0.346

19317

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

[[_2nd_order, _missing_x], _Liouville, [_2nd_order, _reducible, _mu_xy]]

1.035

19318

\[ {}y^{\prime \prime } = a {y^{\prime }}^{2} \]

[[_2nd_order, _missing_x], _Liouville, [_2nd_order, _reducible, _mu_xy]]

0.447

19319

\[ {}y y^{\prime \prime }+{y^{\prime }}^{2}+1 = 0 \]

[[_2nd_order, _missing_x], [_2nd_order, _exact, _nonlinear], [_2nd_order, _reducible, _mu_x_y1], [_2nd_order, _reducible, _mu_xy]]

2.274

19320

\[ {}y y^{\prime \prime }+\sqrt {{y^{\prime }}^{2}+a^{2} {y^{\prime \prime }}^{2}} = {y^{\prime }}^{2} \]

[[_2nd_order, _missing_x]]

123.204

19321

\[ {}a y^{\prime \prime } = y^{\prime } \]

[[_2nd_order, _missing_x]]

1.126

19322

\[ {}a^{2} y^{\prime \prime } y^{\prime } = x \]

[[_2nd_order, _missing_y], [_2nd_order, _exact, _nonlinear], [_2nd_order, _reducible, _mu_y_y1], [_2nd_order, _reducible, _mu_poly_yn]]

1.727

19323

\[ {}y^{\prime \prime \prime } y^{\prime \prime } = 2 \]

[[_3rd_order, _missing_x], [_3rd_order, _missing_y], [_3rd_order, _exact, _nonlinear], [_3rd_order, _with_linear_symmetries], [_3rd_order, _reducible, _mu_y2], [_3rd_order, _reducible, _mu_poly_yn]]

0.471

19324

\[ {}y^{\prime \prime } = 1+{y^{\prime }}^{2} \]

[[_2nd_order, _missing_x], [_2nd_order, _reducible, _mu_xy]]

1.378

19325

\[ {}a y^{\prime \prime } = \sqrt {1+{y^{\prime }}^{2}} \]

[[_2nd_order, _missing_x]]

2.450

19326

\[ {}y^{\prime \prime } = a^{2}+k^{2} {y^{\prime }}^{2} \]

[[_2nd_order, _missing_x], [_2nd_order, _reducible, _mu_xy]]

1.545

19327

\[ {}a^{2} {y^{\prime \prime }}^{2} = 1+{y^{\prime }}^{2} \]

[[_2nd_order, _missing_x]]

11.145

19328

\[ {}y^{\prime \prime }+{y^{\prime }}^{2}+1 = 0 \]

[[_2nd_order, _missing_x], [_2nd_order, _reducible, _mu_xy]]

1.672

19329

\[ {}y^{\prime } = x y^{\prime \prime }+\sqrt {1+{y^{\prime }}^{2}} \]

[[_2nd_order, _missing_y], [_2nd_order, _reducible, _mu_y_y1]]

6.696

19330

\[ {}a^{2} y^{\prime \prime \prime \prime } = y^{\prime \prime } \]

[[_high_order, _missing_x]]

0.057

19331

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

[[_high_order, _missing_x]]

0.064

19332

\[ {}y^{\left (5\right )}-n^{2} y^{\prime \prime \prime } = {\mathrm e}^{a x} \]

[[_high_order, _missing_y]]

0.116

19333

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

[[_high_order, _missing_y]]

0.566

19334

\[ {}x^{2} y^{\prime \prime \prime \prime } = \lambda y^{\prime \prime } \]

[[_high_order, _missing_y]]

0.468

19335

\[ {}n \,x^{3} y^{\prime \prime \prime } = y-x y^{\prime } \]

[[_3rd_order, _with_linear_symmetries]]

0.117

19336

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

[[_2nd_order, _exact, _nonlinear], _Liouville, [_2nd_order, _with_linear_symmetries], [_2nd_order, _reducible, _mu_x_y1], [_2nd_order, _reducible, _mu_xy]]

0.974

19337

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

[[_2nd_order, _with_linear_symmetries], [_2nd_order, _reducible, _mu_xy]]

0.144

19338

\[ {}x^{2} y^{\prime \prime } = \sqrt {m \,x^{2} {y^{\prime }}^{3}+n y^{2}} \]

[[_2nd_order, _with_linear_symmetries]]

0.319

19339

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

[[_2nd_order, _with_linear_symmetries], [_2nd_order, _reducible, _mu_x_y1], [_2nd_order, _reducible, _mu_xy]]

0.132

19340

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

[[_2nd_order, _with_linear_symmetries], [_2nd_order, _reducible, _mu_xy]]

0.139

19341

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

[NONE]

0.136

19342

\[ {}y^{\prime \prime } = {\mathrm e}^{y} \]

[[_2nd_order, _missing_x], [_2nd_order, _reducible, _mu_x_y1]]

1.798

19343

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

[[_2nd_order, _missing_x]]

1.671

19344

\[ {}a y^{\prime \prime \prime } = y^{\prime \prime } \]

[[_3rd_order, _missing_x]]

0.048

19345

\[ {}x^{2} y^{\prime \prime \prime \prime }+1 = 0 \]

[[_high_order, _quadrature]]

0.214

19346

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

[[_3rd_order, _quadrature]]

0.150

19347

\[ {}y^{\prime \prime } = \frac {1}{\sqrt {a y}} \]

[[_2nd_order, _missing_x], [_2nd_order, _reducible, _mu_x_y1]]

30.421

19348

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

[[_2nd_order, _exact, _linear, _homogeneous]]

1.438

19349

\[ {}-a y^{\prime \prime } = \left (1+{y^{\prime }}^{2}\right )^{{3}/{2}} \]

[[_2nd_order, _missing_x]]

2.967

19350

\[ {}\sin \left (y\right )^{3} y^{\prime \prime } = \cos \left (y\right ) \]

[[_2nd_order, _missing_x], [_2nd_order, _reducible, _mu_x_y1]]

74.925

19351

\[ {}{\mathrm e}^{x} \left (x y^{\prime \prime }-y^{\prime }\right ) = x^{3} \]

[[_2nd_order, _missing_y]]

0.830

19352

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

[[_2nd_order, _missing_y]]

1.283

19353

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

[[_3rd_order, _missing_y], [_3rd_order, _with_linear_symmetries], [_3rd_order, _reducible, _mu_y2], [_3rd_order, _reducible, _mu_poly_yn]]

0.823

19354

\[ {}y y^{\prime \prime }+\sqrt {{y^{\prime }}^{2}+a^{2} {y^{\prime \prime }}^{2}} = {y^{\prime }}^{2} \]

[[_2nd_order, _missing_x]]

110.907

19355

\[ {}\left (x^{3}-4 x \right ) y^{\prime \prime \prime }+\left (9 x^{2}-4\right ) y^{\prime \prime }+18 x y^{\prime }+6 y = 6 \]

[[_3rd_order, _fully, _exact, _linear]]

0.275

19356

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

[[_2nd_order, _with_linear_symmetries]]

1.684

19357

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

[_Laguerre]

0.826

19358

\[ {}x y^{\prime \prime }+\left (1-x \right ) y^{\prime } = y+{\mathrm e}^{x} \]

[[_2nd_order, _exact, _linear, _nonhomogeneous]]

1.349

19359

\[ {}\left (x +1\right ) y^{\prime \prime }-2 \left (x +3\right ) y^{\prime }+\left (x +5\right ) y = {\mathrm e}^{x} \]

[[_2nd_order, _linear, _nonhomogeneous]]

0.995

19360

\[ {}\left (3-x \right ) y^{\prime \prime }-\left (9-4 x \right ) y^{\prime }+\left (6-3 x \right ) y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

1.036

19361

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

[[_2nd_order, _with_linear_symmetries]]

1.826

19362

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

[[_3rd_order, _with_linear_symmetries]]

0.038

19363

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

[[_3rd_order, _exact, _linear, _homogeneous]]

0.104

19364

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

[[_2nd_order, _with_linear_symmetries]]

0.201

19365

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

[[_2nd_order, _with_linear_symmetries]]

0.125

19366

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

[[_2nd_order, _with_linear_symmetries]]

0.091

19367

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

[[_2nd_order, _with_linear_symmetries]]

0.809

19368

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

[[_2nd_order, _with_linear_symmetries]]

2.204

19369

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

[[_2nd_order, _with_linear_symmetries]]

1.225

19370

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

[[_2nd_order, _with_linear_symmetries]]

33.344

19371

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

[[_2nd_order, _linear, _nonhomogeneous]]

50.863

19372

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

[[_2nd_order, _with_linear_symmetries]]

0.905

19373

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

[[_2nd_order, _with_linear_symmetries]]

0.924

19374

\[ {}y^{\prime \prime }-2 \tan \left (x \right ) y^{\prime }+5 y = \sec \left (x \right ) {\mathrm e}^{x} \]

[[_2nd_order, _linear, _nonhomogeneous]]

27.960

19375

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

[[_2nd_order, _with_linear_symmetries]]

3.880

19376

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

[[_2nd_order, _with_linear_symmetries]]

2.734

19377

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

[[_2nd_order, _with_linear_symmetries]]

1.679

19378

\[ {}y^{\prime \prime }-\frac {y^{\prime }}{\sqrt {x}}+\frac {y \left (-8+\sqrt {x}+x \right )}{4 x^{2}} = 0 \]

[[_2nd_order, _with_linear_symmetries]]

1.067

19379

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

[[_2nd_order, _with_linear_symmetries]]

2.484

19380

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

[[_2nd_order, _linear, _nonhomogeneous]]

0.950

19381

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

[[_2nd_order, _with_linear_symmetries]]

3.393

19382

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

[[_Emden, _Fowler], [_2nd_order, _linear, ‘_with_symmetry_[0,F(x)]‘]]

1.099

19383

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

[[_2nd_order, _with_linear_symmetries], [_2nd_order, _linear, ‘_with_symmetry_[0,F(x)]‘]]

2.323

19384

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

[_Gegenbauer, [_2nd_order, _linear, ‘_with_symmetry_[0,F(x)]‘]]

1.530

19385

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

[[_2nd_order, _with_linear_symmetries]]

3.495

19386

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

[[_2nd_order, _with_linear_symmetries], [_2nd_order, _linear, ‘_with_symmetry_[0,F(x)]‘]]

2.083

19387

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

[[_2nd_order, _with_linear_symmetries], [_2nd_order, _linear, ‘_with_symmetry_[0,F(x)]‘]]

1.213

19388

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

[[_2nd_order, _with_linear_symmetries]]

3.732

19389

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

[[_2nd_order, _with_linear_symmetries]]

6.004

19390

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

[[_2nd_order, _with_linear_symmetries]]

1.191

19391

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

[[_2nd_order, _linear, _nonhomogeneous]]

1.033

19392

\[ {}x^{2} y^{\prime \prime }+y^{\prime }-\left (x^{2}+1\right ) y = {\mathrm e}^{-x} \]

[[_2nd_order, _linear, _nonhomogeneous]]

1.223

19393

\[ {}\left (x +2\right ) y^{\prime \prime }-\left (5+2 x \right ) y^{\prime }+2 y = \left (x +1\right ) {\mathrm e}^{x} \]

[[_2nd_order, _with_linear_symmetries]]

1.416

19394

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

[[_2nd_order, _with_linear_symmetries]]

1.768

19395

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

[[_2nd_order, _linear, _nonhomogeneous]]

3.783

19396

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

[[_2nd_order, _linear, _nonhomogeneous]]

6.168

19397

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

[[_2nd_order, _with_linear_symmetries]]

1.531

19398

\[ {}y^{\prime \prime }-y = \frac {2}{{\mathrm e}^{x}+1} \]

[[_2nd_order, _linear, _nonhomogeneous]]

1.352

19399

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

[[_2nd_order, _linear, _nonhomogeneous]]

2.474

19400

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

[[_2nd_order, _with_linear_symmetries]]

1.440