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

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

[[_2nd_order, _with_linear_symmetries]]

0.100

18202

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

[[_2nd_order, _with_linear_symmetries]]

0.571

18203

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

[[_2nd_order, _with_linear_symmetries]]

0.101

18204

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

[_Laguerre]

1.053

18205

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

[_Laguerre]

0.901

18206

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

[_Laguerre]

0.808

18207

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

[_Laguerre]

0.844

18208

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

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

0.451

18209

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

[[_2nd_order, _missing_x]]

0.860

18210

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

[[_2nd_order, _missing_x]]

0.951

18211

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

[[_2nd_order, _missing_x]]

2.362

18212

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

[[_2nd_order, _missing_x]]

2.059

18213

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

[[_2nd_order, _missing_x]]

0.949

18214

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

[[_2nd_order, _missing_x]]

0.833

18215

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

[[_2nd_order, _missing_x]]

2.168

18216

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

[[_2nd_order, _missing_x]]

0.976

18217

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

[[_2nd_order, _missing_x]]

1.787

18218

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

[[_2nd_order, _missing_x]]

2.710

18219

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

[[_2nd_order, _missing_x]]

0.974

18220

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

[[_2nd_order, _missing_x]]

1.988

18221

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

[[_2nd_order, _missing_x]]

2.024

18222

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

[[_2nd_order, _missing_x]]

2.264

18223

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

[[_2nd_order, _missing_x]]

0.870

18224

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

[[_2nd_order, _missing_x]]

0.971

18225

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

[[_2nd_order, _missing_x]]

2.088

18226

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

[[_2nd_order, _missing_x]]

0.867

18227

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

[[_2nd_order, _missing_x]]

1.199

18228

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

[[_2nd_order, _missing_x]]

1.410

18229

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

[[_2nd_order, _missing_x]]

1.332

18230

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

[[_2nd_order, _missing_x]]

2.188

18231

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

[[_2nd_order, _missing_x]]

1.571

18232

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

[[_2nd_order, _missing_x]]

1.456

18233

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

[[_Emden, _Fowler]]

13.441

18234

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

[[_Emden, _Fowler]]

0.912

18235

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

[[_Emden, _Fowler]]

0.749

18236

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

[[_Emden, _Fowler]]

0.457

18237

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

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

0.899

18238

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

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

0.764

18239

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

[[_Emden, _Fowler]]

2.716

18240

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

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

1.026

18241

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

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

0.837

18242

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

[[_2nd_order, _with_linear_symmetries]]

2.112

18243

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

[[_2nd_order, _with_linear_symmetries]]

0.615

18244

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

[[_2nd_order, _with_linear_symmetries]]

1.145

18245

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

[[_2nd_order, _linear, _nonhomogeneous]]

2.703

18246

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

[[_2nd_order, _with_linear_symmetries]]

1.227

18247

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

[[_2nd_order, _with_linear_symmetries]]

19.132

18248

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

[[_2nd_order, _with_linear_symmetries]]

1.165

18249

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

[[_2nd_order, _linear, _nonhomogeneous]]

1.481

18250

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

[[_2nd_order, _linear, _nonhomogeneous]]

2.973

18251

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

[[_2nd_order, _missing_y]]

2.161

18252

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

[[_2nd_order, _with_linear_symmetries]]

1.138

18253

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

[[_2nd_order, _linear, _nonhomogeneous]]

10.625

18254

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

[[_2nd_order, _missing_y]]

2.129

18255

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

[[_2nd_order, _linear, _nonhomogeneous]]

2.643

18256

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

[[_2nd_order, _linear, _nonhomogeneous]]

5.751

18257

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

[[_2nd_order, _linear, _nonhomogeneous]]

8.941

18258

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

[[_2nd_order, _with_linear_symmetries]]

1.137

18259

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

[[_2nd_order, _with_linear_symmetries]]

1.122

18260

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

[[_2nd_order, _linear, _nonhomogeneous]]

6.344

18261

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

[[_2nd_order, _linear, _nonhomogeneous]]

1.362

18262

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

[[_2nd_order, _linear, _nonhomogeneous]]

1.193

18263

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

[[_2nd_order, _linear, _nonhomogeneous]]

26.720

18264

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

[[_2nd_order, _with_linear_symmetries]]

1.135

18265

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

[[_2nd_order, _linear, _nonhomogeneous]]

0.894

18266

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

[[_2nd_order, _linear, _nonhomogeneous]]

2.898

18267

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

[[_2nd_order, _linear, _nonhomogeneous]]

2.800

18268

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

[[_2nd_order, _linear, _nonhomogeneous]]

4.990

18269

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

[[_2nd_order, _linear, _nonhomogeneous]]

3.518

18270

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

[[_2nd_order, _linear, _nonhomogeneous]]

3.025

18271

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

[[_2nd_order, _linear, _nonhomogeneous]]

4.156

18272

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

[[_2nd_order, _linear, _nonhomogeneous]]

3.601

18273

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

[[_2nd_order, _with_linear_symmetries]]

1.385

18274

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

[[_2nd_order, _linear, _nonhomogeneous]]

1.468

18275

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

[[_2nd_order, _with_linear_symmetries]]

1.559

18276

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

[[_2nd_order, _with_linear_symmetries]]

1.197

18277

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

[[_2nd_order, _with_linear_symmetries]]

2.227

18278

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

[[_3rd_order, _missing_x]]

0.056

18279

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

[[_3rd_order, _missing_x]]

0.058

18280

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

[[_3rd_order, _missing_x]]

0.057

18281

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

[[_3rd_order, _missing_x]]

0.059

18282

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

[[_3rd_order, _missing_x]]

0.055

18283

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

[[_high_order, _missing_x]]

0.061

18284

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

[[_high_order, _missing_x]]

0.056

18285

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

[[_high_order, _missing_x]]

0.065

18286

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

[[_high_order, _missing_x]]

0.080

18287

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

[[_high_order, _missing_x]]

0.081

18288

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

[[_high_order, _missing_x]]

0.063

18289

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

[[_high_order, _missing_x]]

0.069

18290

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

[[_3rd_order, _missing_x]]

0.053

18291

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

[[_high_order, _missing_x]]

0.062

18292

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

[[_high_order, _missing_x]]

0.069

18293

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

[[_high_order, _quadrature]]

0.045

18294

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

[[_high_order, _quadrature]]

0.138

18295

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

[[_3rd_order, _missing_y]]

0.116

18296

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

[[_3rd_order, _missing_x]]

0.154

18297

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

[[_3rd_order, _missing_y]]

0.097

18298

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

[[_3rd_order, _exact, _linear, _homogeneous]]

0.108

18299

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

[[_3rd_order, _with_linear_symmetries]]

0.112

18300

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

[[_high_order, _missing_y]]

0.308