2.2.183 Problems 18201 to 18300

Table 2.367: Main lookup table. Sorted sequentially by problem number.

#

ODE

CAS classification

Solved?

time (sec)

18201

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

[_linear]

1.505

18202

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

[_linear]

1.338

18203

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

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

1.766

18204

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

[[_1st_order, _with_linear_symmetries], _exact]

3.571

18205

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

[[_2nd_order, _missing_y]]

1.009

18206

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

[_exact]

35.673

18207

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

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

1.955

18208

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

[_linear]

1.563

18209

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

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

4.697

18210

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

[_linear]

1.621

18211

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

[_exact]

37.988

18212

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

[[_2nd_order, _missing_y]]

0.900

18213

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

[NONE]

0.205

18214

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

[‘y=_G(x,y’)‘]

1.665

18215

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

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

5.174

18216

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

[_linear]

1.439

18217

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

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

2.313

18218

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

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

60.615

18219

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

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

3.634

18220

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

[_separable]

1.795

18221

\[ {}\frac {3 y^{2}}{x^{2}+3 x}+\left (2 y \ln \left (\frac {5 x}{x +3}\right )+3 \sin \left (y\right )\right ) y^{\prime } = 0 \]

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

36.433

18222

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

[_linear]

6.913

18223

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

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

1.559

18224

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

[[_2nd_order, _missing_y]]

0.507

18225

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

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

12.039

18226

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

[_linear]

1.400

18227

\[ {}y^{\prime } = \frac {-3 x -2 y-1}{2 x +3 y-1} \]

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

3.589

18228

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

[_linear]

1.393

18229

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

[_exact]

2.287

18230

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

[[_2nd_order, _missing_x], [_2nd_order, _reducible, _mu_x_y1], [_2nd_order, _reducible, _mu_y_y1]]

0.339

18231

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

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

6.303

18232

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

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

2.505

18233

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

[_Bernoulli]

1.811

18234

\[ {}\frac {\cos \left (y\right )}{x +3}-\left (\sin \left (y\right ) \ln \left (5 x +15\right )-\frac {1}{y}\right ) y^{\prime } = 0 \]

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

35.589

18235

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

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

0.220

18236

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

[_linear]

1.103

18237

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

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

2.601

18238

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

[[_2nd_order, _missing_x], [_2nd_order, _reducible, _mu_x_y1], [_2nd_order, _reducible, _mu_y_y1]]

0.272

18239

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

[_linear]

1.648

18240

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

[[_2nd_order, _missing_y]]

1.109

18241

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

[[_2nd_order, _missing_y]]

0.846

18242

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

[[_2nd_order, _with_linear_symmetries]]

1.267

18243

\[ {}x^{3} y^{\prime \prime }+x^{2} y^{\prime }+x y = 1 \]

[[_2nd_order, _with_linear_symmetries]]

2.860

18244

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

[[_2nd_order, _missing_x]]

2.079

18245

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

[[_2nd_order, _linear, _nonhomogeneous]]

1.739

18246

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

[[_2nd_order, _quadrature]]

1.877

18247

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

[[_2nd_order, _missing_x]]

2.089

18248

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

[[_2nd_order, _linear, _nonhomogeneous]]

1.640

18249

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

[[_2nd_order, _with_linear_symmetries]]

1.204

18250

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

[[_2nd_order, _missing_y]]

2.082

18251

\[ {}x^{2} y^{\prime \prime }-3 y^{\prime } x -5 y = 0 \]

[[_2nd_order, _exact, _linear, _homogeneous]]

1.097

18252

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

[[_2nd_order, _with_linear_symmetries]]

1.470

18253

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

[[_2nd_order, _missing_x]]

2.155

18254

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

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

1.892

18255

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

[[_2nd_order, _missing_x]]

1.302

18256

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

[[_2nd_order, _missing_x]]

1.171

18257

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

[[_2nd_order, _exact, _linear, _homogeneous]]

1.203

18258

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

[[_2nd_order, _missing_x]]

1.651

18259

\[ {}y^{\prime \prime }+5 y^{\prime }+6 y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

1.401

18260

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

[[_2nd_order, _missing_x]]

2.438

18261

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

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

0.306

18262

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

[[_2nd_order, _with_linear_symmetries]]

0.777

18263

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

[[_2nd_order, _missing_x]]

0.526

18264

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

[[_2nd_order, _missing_x]]

0.457

18265

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

[[_2nd_order, _missing_y]]

0.304

18266

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

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

0.322

18267

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

[_Gegenbauer]

0.330

18268

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

[[_2nd_order, _with_linear_symmetries]]

0.367

18269

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

[[_2nd_order, _with_linear_symmetries]]

0.322

18270

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

[[_Emden, _Fowler]]

0.297

18271

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

[[_2nd_order, _with_linear_symmetries]]

0.322

18272

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

[[_2nd_order, _with_linear_symmetries]]

0.746

18273

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

[[_2nd_order, _with_linear_symmetries]]

0.317

18274

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

[_Laguerre]

1.188

18275

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

[_Laguerre]

1.030

18276

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

[_Laguerre]

0.927

18277

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

[_Laguerre]

1.004

18278

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

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

0.452

18279

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

[[_2nd_order, _missing_x]]

1.063

18280

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

[[_2nd_order, _missing_x]]

1.147

18281

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

[[_2nd_order, _missing_x]]

2.292

18282

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

[[_2nd_order, _missing_x]]

2.168

18283

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

[[_2nd_order, _missing_x]]

1.167

18284

\[ {}y^{\prime \prime }-9 y^{\prime }+20 y = 0 \]

[[_2nd_order, _missing_x]]

1.046

18285

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

[[_2nd_order, _missing_x]]

2.240

18286

\[ {}4 y^{\prime \prime }-12 y^{\prime }+9 y = 0 \]

[[_2nd_order, _missing_x]]

1.202

18287

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

[[_2nd_order, _missing_x]]

1.834

18288

\[ {}y^{\prime \prime }-6 y^{\prime }+25 y = 0 \]

[[_2nd_order, _missing_x]]

2.726

18289

\[ {}4 y^{\prime \prime }+20 y^{\prime }+25 y = 0 \]

[[_2nd_order, _missing_x]]

1.187

18290

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

[[_2nd_order, _missing_x]]

2.101

18291

\[ {}y^{\prime \prime } = 4 y \]

[[_2nd_order, _missing_x]]

2.334

18292

\[ {}4 y^{\prime \prime }-8 y^{\prime }+7 y = 0 \]

[[_2nd_order, _missing_x]]

2.341

18293

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

[[_2nd_order, _missing_x]]

1.080

18294

\[ {}16 y^{\prime \prime }-8 y^{\prime }+y = 0 \]

[[_2nd_order, _missing_x]]

1.182

18295

\[ {}y^{\prime \prime }+4 y^{\prime }+5 y = 0 \]

[[_2nd_order, _missing_x]]

2.130

18296

\[ {}y^{\prime \prime }+4 y^{\prime }-5 y = 0 \]

[[_2nd_order, _missing_x]]

1.079

18297

\[ {}y^{\prime \prime }-5 y^{\prime }+6 y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

1.429

18298

\[ {}y^{\prime \prime }-6 y^{\prime }+5 y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

1.638

18299

\[ {}y^{\prime \prime }-6 y^{\prime }+9 y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

1.489

18300

\[ {}y^{\prime \prime }+4 y^{\prime }+5 y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

2.285