2.2.3 Problems 201 to 300

Table 2.7: Main lookup table. Sorted sequentially by problem number.

#

ODE

CAS classification

Solved?

time (sec)

201

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

[_exact]

39.172

202

\[ {}9 x^{2} y^{2}+x^{{3}/{2}} y^{\prime } = y^{2} \]

[_separable]

2.218

203

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

[_linear]

2.470

204

\[ {}9 \sqrt {x}\, y^{{4}/{3}}-12 x^{{1}/{5}} y^{{3}/{2}}+\left (8 x^{{3}/{2}} y^{{1}/{3}}-15 x^{{6}/{5}} \sqrt {y}\right ) y^{\prime } = 0 \]

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

42.970

205

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

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

2.550

206

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

[_linear]

1.111

207

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

[_linear]

3.626

208

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

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

3.581

209

\[ {}y^{\prime } = 3 \left (y+7\right ) x^{2} \]

[_separable]

1.848

210

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

[_separable]

4.826

211

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

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

507.106

212

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

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

9.536

213

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

[_separable]

1.659

214

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

[_separable]

14.743

215

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

[[_2nd_order, _missing_x]]

2.842

216

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

[[_2nd_order, _missing_x]]

3.406

217

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

[[_2nd_order, _missing_x]]

4.987

218

\[ {}y^{\prime \prime }+25 y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

3.425

219

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

[[_2nd_order, _missing_x]]

0.950

220

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

[[_2nd_order, _missing_x]]

0.964

221

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

[[_2nd_order, _missing_x]]

2.311

222

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

[[_2nd_order, _missing_x]]

2.487

223

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

[[_2nd_order, _missing_x]]

1.192

224

\[ {}y^{\prime \prime }-10 y^{\prime }+25 y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

1.191

225

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

[[_2nd_order, _missing_x]]

1.640

226

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

[[_2nd_order, _missing_x]]

2.801

227

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

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

2.093

228

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

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

0.943

229

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

[[_Emden, _Fowler]]

1.878

230

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

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

1.918

231

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

[_quadrature]

1.144

232

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

[[_Emden, _Fowler], [_2nd_order, _with_linear_symmetries]]

0.098

233

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

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

0.422

234

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

[[_2nd_order, _missing_x]]

0.681

235

\[ {}y^{\prime \prime }+2 y^{\prime }-15 y = 0 \]

[[_2nd_order, _missing_x]]

0.692

236

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

[[_2nd_order, _missing_x]]

2.107

237

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

[[_2nd_order, _missing_x]]

2.251

238

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

[[_2nd_order, _missing_x]]

0.717

239

\[ {}4 y^{\prime \prime }+8 y^{\prime }+3 y = 0 \]

[[_2nd_order, _missing_x]]

0.701

240

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

[[_2nd_order, _missing_x]]

0.824

241

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

[[_2nd_order, _missing_x]]

0.860

242

\[ {}6 y^{\prime \prime }-7 y^{\prime }-20 y = 0 \]

[[_2nd_order, _missing_x]]

0.779

243

\[ {}35 y^{\prime \prime }-y^{\prime }-12 y = 0 \]

[[_2nd_order, _missing_x]]

0.760

244

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

[[_2nd_order, _exact, _linear, _homogeneous]]

1.283

245

\[ {}x^{2} y^{\prime \prime }+2 y^{\prime } x -12 y = 0 \]

[[_Emden, _Fowler]]

1.074

246

\[ {}4 x^{2} y^{\prime \prime }+8 y^{\prime } x -3 y = 0 \]

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

0.594

247

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

[[_2nd_order, _missing_y]]

0.288

248

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

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

0.729

249

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

[[_3rd_order, _missing_x]]

0.072

250

\[ {}y^{\prime \prime \prime }-6 y^{\prime \prime }+11 y^{\prime }-6 y = 0 \]
i.c.

[[_3rd_order, _missing_x]]

0.059

251

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

[[_3rd_order, _missing_x]]

0.056

252

\[ {}y^{\prime \prime \prime }-5 y^{\prime \prime }+8 y^{\prime }-4 y = 0 \]
i.c.

[[_3rd_order, _missing_x]]

0.055

253

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

[[_3rd_order, _missing_x]]

0.095

254

\[ {}y^{\prime \prime \prime }-3 y^{\prime \prime }+4 y^{\prime }-2 y = 0 \]
i.c.

[[_3rd_order, _missing_x]]

0.107

255

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

[[_3rd_order, _with_linear_symmetries]]

0.123

256

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

[[_3rd_order, _with_linear_symmetries]]

0.119

257

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

[[_2nd_order, _with_linear_symmetries]]

2.543

258

\[ {}y^{\prime \prime }-4 y = 12 \]
i.c.

[[_2nd_order, _missing_x]]

3.750

259

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

[[_2nd_order, _missing_x]]

1.100

260

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

[[_2nd_order, _with_linear_symmetries]]

9.799

261

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

[[_2nd_order, _with_linear_symmetries]]

3.549

262

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

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

1.283

263

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

[[_2nd_order, _missing_x]]

1.980

264

\[ {}x^{2} y^{\prime \prime }+y^{\prime } x -9 y = 0 \]

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

0.089

265

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

[[_2nd_order, _missing_x]]

0.203

266

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

[[_2nd_order, _with_linear_symmetries]]

0.066

267

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

[[_2nd_order, _with_linear_symmetries]]

0.079

268

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

[_Gegenbauer]

0.097

269

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

[_Gegenbauer]

0.071

270

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

[[_2nd_order, _with_linear_symmetries]]

0.163

271

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

[[_2nd_order, _missing_x]]

2.811

272

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

[[_2nd_order, _missing_x]]

1.751

273

\[ {}y^{\prime \prime }+y^{\prime }-10 y = 0 \]

[[_2nd_order, _missing_x]]

0.959

274

\[ {}2 y^{\prime \prime }-7 y^{\prime }+3 y = 0 \]

[[_2nd_order, _missing_x]]

0.687

275

\[ {}y^{\prime \prime }+6 y^{\prime }+9 y = 0 \]

[[_2nd_order, _missing_x]]

0.795

276

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

[[_2nd_order, _missing_x]]

0.920

277

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

[[_2nd_order, _missing_x]]

0.827

278

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

[[_2nd_order, _missing_x]]

2.079

279

\[ {}y^{\prime \prime }+8 y^{\prime }+25 y = 0 \]

[[_2nd_order, _missing_x]]

2.108

280

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

[[_high_order, _missing_x]]

0.044

281

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

[[_high_order, _missing_x]]

0.038

282

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

[[_high_order, _missing_x]]

0.050

283

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

[[_3rd_order, _missing_x]]

0.591

284

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

[[_high_order, _missing_x]]

0.081

285

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

[[_high_order, _missing_x]]

0.050

286

\[ {}y^{\prime \prime \prime \prime }+18 y^{\prime \prime }+81 y = 0 \]

[[_high_order, _missing_x]]

0.089

287

\[ {}6 y^{\prime \prime \prime \prime }+11 y^{\prime \prime }+4 y = 0 \]

[[_high_order, _missing_x]]

0.090

288

\[ {}y^{\prime \prime \prime \prime } = 16 y \]

[[_high_order, _missing_x]]

0.077

289

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

[[_3rd_order, _missing_x]]

0.046

290

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

[[_high_order, _missing_x]]

0.104

291

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

[[_2nd_order, _missing_x]]

1.662

292

\[ {}9 y^{\prime \prime }+6 y^{\prime }+4 y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

2.945

293

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

[[_2nd_order, _missing_x]]

2.859

294

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

[[_3rd_order, _missing_x]]

0.112

295

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

[[_3rd_order, _missing_x]]

0.089

296

\[ {}y^{\prime \prime \prime }+10 y^{\prime \prime }+25 y^{\prime } = 0 \]
i.c.

[[_3rd_order, _missing_x]]

0.093

297

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

[[_3rd_order, _missing_x]]

0.041

298

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

[[_3rd_order, _missing_x]]

0.038

299

\[ {}y^{\prime \prime \prime }+27 y = 0 \]

[[_3rd_order, _missing_x]]

0.079

300

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

[[_high_order, _missing_x]]

0.083