2.2.184 Problems 18301 to 18400

Table 2.369: Main lookup table. Sorted sequentially by problem number.

#

ODE

CAS classification

Solved?

time (sec)

18301

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

[[_2nd_order, _missing_x]]

1.787

18302

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

[[_2nd_order, _missing_x]]

1.688

18303

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

[[_Emden, _Fowler]]

27.742

18304

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

[[_Emden, _Fowler]]

1.055

18305

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

[[_Emden, _Fowler]]

0.849

18306

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

[[_Emden, _Fowler]]

0.681

18307

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

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

1.038

18308

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

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

0.852

18309

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

[[_Emden, _Fowler]]

2.638

18310

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

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

1.144

18311

\[ {}x^{2} y^{\prime \prime }+y^{\prime } x -16 y = 0 \]

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

0.931

18312

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

[[_2nd_order, _with_linear_symmetries]]

2.030

18313

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

[[_2nd_order, _with_linear_symmetries]]

0.559

18314

\[ {}y^{\prime \prime }+3 y^{\prime }-10 y = 6 \,{\mathrm e}^{4 x} \]

[[_2nd_order, _with_linear_symmetries]]

1.300

18315

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

[[_2nd_order, _linear, _nonhomogeneous]]

2.746

18316

\[ {}y^{\prime \prime }+10 y^{\prime }+25 y = 14 \,{\mathrm e}^{-5 x} \]

[[_2nd_order, _with_linear_symmetries]]

1.385

18317

\[ {}y^{\prime \prime }-2 y^{\prime }+5 y = 25 x^{2}+12 \]

[[_2nd_order, _with_linear_symmetries]]

17.344

18318

\[ {}y^{\prime \prime }-y^{\prime }-6 y = 20 \,{\mathrm e}^{-2 x} \]

[[_2nd_order, _with_linear_symmetries]]

1.319

18319

\[ {}y^{\prime \prime }-3 y^{\prime }+2 y = 14 \sin \left (2 x \right )-18 \cos \left (2 x \right ) \]

[[_2nd_order, _linear, _nonhomogeneous]]

1.668

18320

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

[[_2nd_order, _linear, _nonhomogeneous]]

3.726

18321

\[ {}y^{\prime \prime }-2 y^{\prime } = 12 x -10 \]

[[_2nd_order, _missing_y]]

2.199

18322

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

[[_2nd_order, _with_linear_symmetries]]

1.321

18323

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

[[_2nd_order, _linear, _nonhomogeneous]]

10.184

18324

\[ {}y^{\prime \prime }+y^{\prime } = 10 x^{4}+2 \]

[[_2nd_order, _missing_y]]

2.180

18325

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

[[_2nd_order, _linear, _nonhomogeneous]]

2.361

18326

\[ {}y^{\prime \prime }+4 y = 4 \cos \left (2 x \right )+6 \cos \left (x \right )+8 x^{2}-4 x \]

[[_2nd_order, _linear, _nonhomogeneous]]

5.375

18327

\[ {}y^{\prime \prime }+9 y = 2 \sin \left (3 x \right )+4 \sin \left (x \right )-26 \,{\mathrm e}^{-2 x}+27 x^{3} \]

[[_2nd_order, _linear, _nonhomogeneous]]

7.970

18328

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

[[_2nd_order, _with_linear_symmetries]]

1.342

18329

\[ {}y^{\prime \prime }-y^{\prime }-6 y = {\mathrm e}^{-x} \]

[[_2nd_order, _with_linear_symmetries]]

1.238

18330

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

[[_2nd_order, _linear, _nonhomogeneous]]

7.592

18331

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

[[_2nd_order, _linear, _nonhomogeneous]]

1.469

18332

\[ {}y^{\prime \prime }-2 y^{\prime }-3 y = 64 x \,{\mathrm e}^{-x} \]

[[_2nd_order, _linear, _nonhomogeneous]]

1.388

18333

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

[[_2nd_order, _linear, _nonhomogeneous]]

25.536

18334

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

[[_2nd_order, _with_linear_symmetries]]

1.253

18335

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

[[_2nd_order, _linear, _nonhomogeneous]]

1.071

18336

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

[[_2nd_order, _linear, _nonhomogeneous]]

2.868

18337

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

[[_2nd_order, _linear, _nonhomogeneous]]

2.862

18338

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

[[_2nd_order, _linear, _nonhomogeneous]]

4.763

18339

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

[[_2nd_order, _linear, _nonhomogeneous]]

3.363

18340

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

[[_2nd_order, _linear, _nonhomogeneous]]

3.102

18341

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

[[_2nd_order, _linear, _nonhomogeneous]]

3.125

18342

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

[[_2nd_order, _linear, _nonhomogeneous]]

3.507

18343

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

[[_2nd_order, _with_linear_symmetries]]

1.429

18344

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

[[_2nd_order, _linear, _nonhomogeneous]]

1.483

18345

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

[[_2nd_order, _with_linear_symmetries]]

1.542

18346

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

[[_2nd_order, _with_linear_symmetries]]

1.225

18347

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

[[_2nd_order, _with_linear_symmetries]]

2.211

18348

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

[[_3rd_order, _missing_x]]

0.069

18349

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

[[_3rd_order, _missing_x]]

0.079

18350

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

[[_3rd_order, _missing_x]]

0.084

18351

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

[[_3rd_order, _missing_x]]

0.083

18352

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

[[_3rd_order, _missing_x]]

0.073

18353

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

[[_high_order, _missing_x]]

0.085

18354

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

[[_high_order, _missing_x]]

0.084

18355

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

[[_high_order, _missing_x]]

0.082

18356

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

[[_high_order, _missing_x]]

0.096

18357

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

[[_high_order, _missing_x]]

0.103

18358

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

[[_high_order, _missing_x]]

0.083

18359

\[ {}y^{\prime \prime \prime \prime }+2 y^{\prime \prime \prime }-2 y^{\prime \prime }-6 y^{\prime }+5 y = 0 \]

[[_high_order, _missing_x]]

0.084

18360

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

[[_3rd_order, _missing_x]]

0.073

18361

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

[[_high_order, _missing_x]]

0.078

18362

\[ {}y^{\left (5\right )}-6 y^{\prime \prime \prime \prime }-8 y^{\prime \prime \prime }+48 y^{\prime \prime }+16 y^{\prime }-96 y = 0 \]

[[_high_order, _missing_x]]

0.088

18363

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

[[_high_order, _quadrature]]

0.041

18364

\[ {}y^{\prime \prime \prime \prime } = \sin \left (x \right )+24 \]

[[_high_order, _quadrature]]

0.142

18365

\[ {}y^{\prime \prime \prime }-3 y^{\prime \prime }+2 y^{\prime } = 10+42 \,{\mathrm e}^{3 x} \]

[[_3rd_order, _missing_y]]

0.131

18366

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

[[_3rd_order, _missing_x]]

0.159

18367

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

[[_3rd_order, _missing_y]]

0.117

18368

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

[[_3rd_order, _exact, _linear, _homogeneous]]

0.129

18369

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

[[_3rd_order, _with_linear_symmetries]]

0.128

18370

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

[[_high_order, _missing_y]]

0.260

18371

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

[[_2nd_order, _with_linear_symmetries]]

1.312

18372

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

[[_2nd_order, _linear, _nonhomogeneous]]

1.392

18373

\[ {}y^{\prime \prime }+4 y^{\prime }+4 y = 10 x^{3} {\mathrm e}^{-2 x} \]

[[_2nd_order, _linear, _nonhomogeneous]]

1.365

18374

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

[[_2nd_order, _with_linear_symmetries]]

1.329

18375

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

[[_2nd_order, _with_linear_symmetries]]

1.336

18376

\[ {}y^{\prime \prime }-2 y^{\prime }-3 y = 6 \,{\mathrm e}^{5 x} \]

[[_2nd_order, _with_linear_symmetries]]

1.283

18377

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

[[_2nd_order, _linear, _nonhomogeneous]]

29.495

18378

\[ {}y^{\prime \prime \prime }-2 y^{\prime }+y = 2 x^{3}-3 x^{2}+4 x +5 \]

[[_3rd_order, _linear, _nonhomogeneous]]

0.135

18379

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

[[_2nd_order, _linear, _nonhomogeneous]]

2.672

18380

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

[[_high_order, _missing_y]]

0.130

18381

\[ {}y^{\left (6\right )}-y = x^{10} \]

[[_high_order, _linear, _nonhomogeneous]]

0.171

18382

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

[[_2nd_order, _linear, _nonhomogeneous]]

1.737

18383

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

[[_2nd_order, _linear, _nonhomogeneous]]

2.110

18384

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

[[_3rd_order, _missing_y]]

0.110

18385

\[ {}y^{\prime \prime \prime }+y^{\prime \prime } = 9 x^{2}-2 x +1 \]

[[_3rd_order, _missing_y]]

0.116

18386

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

[[_2nd_order, _linear, _nonhomogeneous]]

1.428

18387

\[ {}y^{\prime \prime }-7 y^{\prime }+12 y = {\mathrm e}^{2 x} \left (x^{3}-5 x^{2}\right ) \]

[[_2nd_order, _linear, _nonhomogeneous]]

1.484

18388

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

[[_2nd_order, _linear, _nonhomogeneous]]

1.493

18389

\[ {}y^{\prime \prime \prime }-8 y = 16 x^{2} \]

[[_3rd_order, _with_linear_symmetries]]

0.123

18390

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

[[_high_order, _linear, _nonhomogeneous]]

0.123

18391

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

[[_3rd_order, _missing_y]]

0.115

18392

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

[[_high_order, _quadrature]]

0.188

18393

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

[[_3rd_order, _missing_y]]

0.118

18394

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

[[_3rd_order, _missing_y]]

0.110

18395

\[ {}y^{\prime \prime \prime }-6 y^{\prime \prime }+12 y^{\prime }-8 y = {\mathrm e}^{2 x} \]

[[_3rd_order, _with_linear_symmetries]]

0.128

18396

\[ {}y^{\prime \prime \prime }+3 y^{\prime \prime }+3 y^{\prime }+y = 12 \,{\mathrm e}^{-x} \]

[[_3rd_order, _with_linear_symmetries]]

0.134

18397

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

[[_2nd_order, _linear, _nonhomogeneous]]

1.605

18398

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

[_separable]

0.587

18399

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

[_quadrature]

0.361

18400

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

[_separable]

0.491