2.2.13 Problems 1201 to 1300

Table 2.27: Main lookup table. Sorted sequentially by problem number.

#

ODE

CAS classification

Solved?

time (sec)

1201

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

[_exact]

83.417

1202

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

[_linear]

1.973

1203

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

[[_Abel, ‘2nd type‘, ‘class B‘]]

1.182

1204

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

[_separable]

14.243

1205

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

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

15.150

1206

\[ {}-1+9 x^{2}+y+\left (x -4 y\right ) y^{\prime } = 0 \]
i.c.

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

1.388

1207

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

[_separable]

3.916

1208

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

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

1.319

1209

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

[_separable]

2.401

1210

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

[[_homogeneous, ‘class D‘], _rational]

2.527

1211

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

[[_linear, ‘class A‘]]

0.982

1212

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

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

4.405

1213

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

[[_1st_order, _with_exponential_symmetries]]

2.084

1214

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

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

9.225

1215

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

[_rational]

1.908

1216

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

[_rational]

2.094

1217

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

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

18.459

1218

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

[_linear]

1.984

1219

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

[_separable]

7.088

1220

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

[_rational]

1.482

1221

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

[_separable]

1.392

1222

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

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

1.503

1223

\[ {}y x +y^{\prime } x = 1-y \]
i.c.

[_linear]

3.490

1224

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

[_separable]

1.504

1225

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

[_linear]

1.514

1226

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

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

1.352

1227

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

[_separable]

4.549

1228

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

[_exact]

1.562

1229

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

[_linear]

3.957

1230

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

[_separable]

1.952

1231

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

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

13.908

1232

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

[_separable]

2.423

1233

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

[NONE]

87.157

1234

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

[[_linear, ‘class A‘]]

1.042

1235

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

[[_linear, ‘class A‘]]

3.651

1236

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

[_rational]

1.479

1237

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

[_separable]

2.753

1238

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

[_rational]

3.898

1239

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

[_separable]

1.459

1240

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

[_linear]

1.347

1241

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

[_separable]

7.181

1242

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

[_exact, _rational]

2.363

1243

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

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

23.811

1244

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

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

1.357

1245

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

[_linear]

5.305

1246

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

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

6.305

1247

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

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

15.019

1248

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

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

6.280

1249

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

[[_2nd_order, _missing_x]]

0.399

1250

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

[[_2nd_order, _missing_x]]

2.801

1251

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

[[_2nd_order, _missing_x]]

0.454

1252

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

[[_2nd_order, _missing_x]]

0.383

1253

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

[[_2nd_order, _missing_x]]

1.194

1254

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

[[_2nd_order, _missing_x]]

2.583

1255

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

[[_2nd_order, _missing_x]]

0.741

1256

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

[[_2nd_order, _missing_x]]

3.315

1257

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

[[_2nd_order, _missing_x]]

0.586

1258

\[ {}y^{\prime \prime }+4 y^{\prime }+3 y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

0.621

1259

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

[[_2nd_order, _missing_x]]

0.618

1260

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

[[_2nd_order, _missing_x]]

1.744

1261

\[ {}y^{\prime \prime }+5 y^{\prime }+3 y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

1.276

1262

\[ {}2 y^{\prime \prime }+y^{\prime }-4 y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

1.179

1263

\[ {}y^{\prime \prime }+8 y^{\prime }-9 y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

0.670

1264

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

[[_2nd_order, _missing_x]]

5.267

1265

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

[[_2nd_order, _missing_x]]

2.028

1266

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

[[_2nd_order, _missing_x]]

0.571

1267

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

[[_2nd_order, _missing_x]]

0.568

1268

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

[[_2nd_order, _missing_x]]

1.316

1269

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

[[_2nd_order, _missing_x]]

2.995

1270

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

[[_2nd_order, _missing_x]]

2.346

1271

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

[[_2nd_order, _missing_x]]

0.619

1272

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

[[_2nd_order, _missing_x]]

0.515

1273

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

[[_2nd_order, _missing_x]]

0.731

1274

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

[[_2nd_order, _missing_x]]

1.778

1275

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

[[_2nd_order, _missing_x]]

0.377

1276

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

[[_2nd_order, _missing_x]]

1.007

1277

\[ {}y^{\prime \prime }+6 y^{\prime }+13 y = 0 \]

[[_2nd_order, _missing_x]]

4.343

1278

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

[[_2nd_order, _missing_x]]

2.655

1279

\[ {}y^{\prime \prime }+2 y^{\prime }+\frac {5 y}{4} = 0 \]

[[_2nd_order, _missing_x]]

1.415

1280

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

[[_2nd_order, _missing_x]]

0.398

1281

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

[[_2nd_order, _missing_x]]

3.627

1282

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

[[_2nd_order, _missing_x]]

1.515

1283

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

[[_2nd_order, _missing_x]]

2.261

1284

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

[[_2nd_order, _missing_x]]

1.003

1285

\[ {}y^{\prime \prime }-2 y^{\prime }+5 y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

4.350

1286

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

[[_2nd_order, _missing_x]]

3.146

1287

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

[[_2nd_order, _missing_x]]

0.931

1288

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

[[_2nd_order, _missing_x]]

1.237

1289

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

[[_2nd_order, _missing_x]]

2.152

1290

\[ {}5 u^{\prime \prime }+2 u^{\prime }+7 u = 0 \]
i.c.

[[_2nd_order, _missing_x]]

4.931

1291

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

[[_2nd_order, _missing_x]]

1.933

1292

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

[[_2nd_order, _missing_x]]

1.628

1293

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

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

1.375

1294

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

[[_2nd_order, _exact, _linear, _homogeneous]]

4.023

1295

\[ {}t^{2} y^{\prime \prime }+3 t y^{\prime }+\frac {5 y}{4} = 0 \]

[[_Emden, _Fowler]]

2.332

1296

\[ {}t^{2} y^{\prime \prime }-4 t y^{\prime }-6 y = 0 \]

[[_2nd_order, _exact, _linear, _homogeneous]]

1.065

1297

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

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

1.137

1298

\[ {}t^{2} y^{\prime \prime }-t y^{\prime }+5 y = 0 \]

[[_Emden, _Fowler]]

5.815

1299

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

[[_Emden, _Fowler]]

0.942

1300

\[ {}t^{2} y^{\prime \prime }+7 t y^{\prime }+10 y = 0 \]

[[_Emden, _Fowler]]

2.119