2.1.7 Problems not solved. Series solution only

Table 2.13: Problems not solved. Series solution only. [116]

#

ID

ODE

CAS classification

Maple

Mma

Sympy

time(sec)

\(1\)

416

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{2} y^{\prime }+y&=0 \end {array} \]

Series expansion around \(x=0\).

[_separable]

0.108

\(2\)

417

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{3} y^{\prime }&=2 y \end {array} \]

Series expansion around \(x=0\).

[_separable]

0.156

\(3\)

459

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{2} y^{\prime \prime }+\cos \left (x \right ) y^{\prime }+y x&=0 \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.174

\(4\)

460

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} 3 x^{3} y^{\prime \prime }+2 x^{2} y^{\prime }+\left (-x^{2}+1\right ) y&=0 \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.099

\(5\)

472

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{3} \left (1-x \right ) y^{\prime \prime }+\left (3 x +2\right ) y^{\prime }+y x&=0 \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.108

\(6\)

491

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{2} y^{\prime \prime }+\left (3 x -1\right ) y^{\prime }+y&=0 \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _exact, _linear, _homogeneous]]

0.172

\(7\)

492

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{3} y^{\prime \prime }-y^{\prime } x +y&=0 \end {array} \]

Series expansion around \(x=0\).

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

0.092

\(8\)

1058

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{2} y^{\prime }+y&=0 \end {array} \]

Series expansion around \(x=0\).

[_separable]

0.175

\(9\)

1059

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{3} y^{\prime }&=2 y \end {array} \]

Series expansion around \(x=0\).

[_separable]

0.236

\(10\)

2441

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} t \left (-2+t \right )^{2} y^{\prime \prime }+y^{\prime } t +y&=0 \end {array} \]

Series expansion around \(t=2\).

[[_2nd_order, _with_linear_symmetries]]

0.351

\(11\)

2444

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} \left (-t^{2}+1\right ) y^{\prime \prime }+\frac {y^{\prime }}{\sin \left (1+t \right )}+y&=0 \end {array} \]

Series expansion around \(t=-1\).

[[_2nd_order, _with_linear_symmetries]]

0.540

\(12\)

2452

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} t^{3} y^{\prime \prime }-y^{\prime } t -\left (t^{2}+\frac {5}{4}\right ) y&=0 \end {array} \]

Series expansion around \(t=0\).

[[_2nd_order, _with_linear_symmetries]]

0.187

\(13\)

2638

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} t \left (-2+t \right )^{2} y^{\prime \prime }+y^{\prime } t +y&=0 \end {array} \]

Series expansion around \(t=2\).

[[_2nd_order, _with_linear_symmetries]]

0.385

\(14\)

2641

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} \left (-t^{2}+1\right ) y^{\prime \prime }+\frac {y^{\prime }}{\sin \left (1+t \right )}+y&=0 \end {array} \]

Series expansion around \(t=-1\).

[[_2nd_order, _with_linear_symmetries]]

0.404

\(15\)

2658

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} t^{2} y^{\prime \prime }+\left (-t^{2}+1\right ) y^{\prime }+4 t y&=0 \end {array} \]

Series expansion around \(t=0\).

[[_2nd_order, _with_linear_symmetries]]

2.293

\(16\)

3370

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{3} \left (x^{2}+3\right ) y^{\prime \prime }+5 y^{\prime } x -\left (x +1\right ) y&=0 \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.104

\(17\)

3511

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+\frac {y}{z^{3}}&=0 \end {array} \]

Series expansion around \(z=0\).

[[_Emden, _Fowler]]

0.056

\(18\)

4008

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+\frac {2 y^{\prime }}{x \left (x -3\right )}-\frac {y}{x^{3} \left (x +3\right )}&=0 \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.079

\(19\)

7169

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{4} y^{\prime \prime }+y^{\prime } x +y&=0 \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.108

\(20\)

7182

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{3} y^{\prime \prime }-\left (2 x -1\right ) y&=0 \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.074

\(21\)

7186

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+\frac {a y}{x^{{3}/{2}}}&=0 \end {array} \]

Series expansion around \(x=0\).

[[_Emden, _Fowler]]

0.169

\(22\)

7190

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{3} y^{\prime \prime }+y&=x^{{3}/{2}} \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _linear, _nonhomogeneous]]

0.095

\(23\)

7191

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} 2 x^{2} y^{\prime \prime }-\left (3 x +2\right ) y^{\prime }+\frac {\left (2 x -1\right ) y}{x}&=\sqrt {x} \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _linear, _nonhomogeneous]]

0.110

\(24\)

7623

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{2} y^{\prime \prime }+3 y^{\prime }-y x&=0 \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.090

\(25\)

7836

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{3} y^{\prime \prime }+y&=0 \end {array} \]

Series expansion around \(x=0\).

[[_Emden, _Fowler]]

0.069

\(26\)

8091

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{3} \left (x +1\right ) y^{\prime \prime \prime }-\left (2+4 x \right ) x^{2} y^{\prime \prime }+\left (4+10 x \right ) x y^{\prime }-\left (4+12 x \right ) y&=0 \end {array} \]

Series expansion around \(x=0\).

[[_3rd_order, _with_linear_symmetries]]

0.029

\(27\)

8092

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{3} \left (x^{2}+1\right ) y^{\prime \prime \prime }-\left (4 x^{2}+2\right ) x^{2} y^{\prime \prime }+\left (10 x^{2}+4\right ) x y^{\prime }-\left (12 x^{2}+4\right ) y&=0 \end {array} \]

Series expansion around \(x=0\).

[[_3rd_order, _with_linear_symmetries]]

0.027

\(28\)

8118

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{3} y^{\prime \prime }+y&=\frac {1}{x^{4}} \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _linear, _nonhomogeneous]]

0.065

\(29\)

8119

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime } x -2 y^{\prime }+y&=\cos \left (x \right ) \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _linear, _nonhomogeneous]]

2.277

\(30\)

8120

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime }-\frac {y}{x}&=\cos \left (x \right ) \end {array} \]

Series expansion around \(x=0\).

[_linear]

0.365

\(31\)

8139

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{2} y^{\prime \prime }+y^{\prime }+y&=0 \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.121

\(32\)

8144

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{3} y^{\prime \prime }+\left (x +1\right ) y&=0 \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.085

\(33\)

8499

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{3} y^{\prime \prime }+4 x^{2} y^{\prime }+3 y&=0 \end {array} \]

Series expansion around \(x=0\).

[[_Emden, _Fowler]]

0.280

\(34\)

8507

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{3} \left (x^{2}-25\right ) \left (x -2\right )^{2} y^{\prime \prime }+3 x \left (x -2\right ) y^{\prime }+7 \left (x +5\right ) y&=0 \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.358

\(35\)

8531

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{4} y^{\prime \prime }+\lambda y&=0 \end {array} \]

Series expansion around \(x=0\).

[[_Emden, _Fowler]]

0.456

\(36\)

8532

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{3} y^{\prime \prime }+y&=0 \end {array} \]

Series expansion around \(x=0\).

[[_Emden, _Fowler]]

0.230

\(37\)

8533

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{2} y^{\prime \prime }+\left (3 x -1\right ) y^{\prime }+y&=0 \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _exact, _linear, _homogeneous]]

0.585

\(38\)

8985

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{2} y^{\prime \prime }-5 y^{\prime }+3 x^{2} y&=0 \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.806

\(39\)

9361

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{2} y^{\prime }&=y \end {array} \]

Series expansion around \(x=0\).

[_separable]

0.419

\(40\)

9384

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{3} \left (-1+x \right ) y^{\prime \prime }-2 \left (-1+x \right ) y^{\prime }+3 y x&=0 \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.759

\(41\)

9386

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{2} y^{\prime \prime }+\left (-x +2\right ) y^{\prime }&=0 \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _missing_y]]

0.911

\(42\)

9392

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{4} y^{\prime \prime }+\sin \left (x \right ) y&=0 \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.664

\(43\)

9402

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+\frac {y^{\prime }}{x^{2}}-\frac {y}{x^{3}}&=0 \end {array} \]

Series expansion around \(x=0\).

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

0.717

\(44\)

9403

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{2} y^{\prime \prime }+\left (3 x -1\right ) y^{\prime }+y&=0 \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _exact, _linear, _homogeneous]]

1.708

\(45\)

9435

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{3} y^{\prime \prime \prime }+2 x^{2} y^{\prime \prime }+\left (x^{2}+x \right ) y^{\prime }+y x&=0 \end {array} \]

Series expansion around \(x=0\).

[[_3rd_order, _with_linear_symmetries]]

0.082

\(46\)

9436

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{3} y^{\prime \prime \prime }+x^{2} y^{\prime \prime }-3 y^{\prime } x +\left (-1+x \right ) y&=0 \end {array} \]

Series expansion around \(x=0\).

[[_3rd_order, _with_linear_symmetries]]

0.079

\(47\)

9437

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{3} y^{\prime \prime \prime }-2 x^{2} y^{\prime \prime }+\left (x^{2}+2 x \right ) y^{\prime }-y x&=0 \end {array} \]

Series expansion around \(x=0\).

[[_3rd_order, _with_linear_symmetries]]

0.078

\(48\)

9438

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{3} y^{\prime \prime \prime }+\left (2 x^{3}-x^{2}\right ) y^{\prime \prime }-y^{\prime } x +y&=0 \end {array} \]

Series expansion around \(x=0\).

[[_3rd_order, _with_linear_symmetries]]

0.078

\(49\)

9524

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+5 y^{\prime } x +\sqrt {x}\, y&=0 \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

2.107

\(50\)

9527

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{3} y^{\prime \prime }+4 x^{2} y^{\prime }+3 y&=0 \end {array} \]

Series expansion around \(x=0\).

[[_Emden, _Fowler]]

0.552

\(51\)

9535

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{3} \left (x^{2}-25\right ) \left (x -2\right )^{2} y^{\prime \prime }+3 x \left (x -2\right ) y^{\prime }+7 \left (x +5\right ) y&=0 \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.660

\(52\)

9560

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{3} y^{\prime \prime }+y&=0 \end {array} \]

Series expansion around \(x=0\).

[[_Emden, _Fowler]]

0.473

\(53\)

9561

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{2} y^{\prime \prime }+\left (3 x -1\right ) y^{\prime }+y&=0 \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _exact, _linear, _homogeneous]]

1.527

\(54\)

10166

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} 2 x^{2} y^{\prime \prime }-y^{\prime } x +\left (-x^{2}+1\right ) y&=x +1 \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _linear, _nonhomogeneous]]

0.680

\(55\)

10167

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} 2 x^{2} y^{\prime \prime }-y^{\prime } x +\left (-x^{2}+1\right ) y&=x \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _linear, _nonhomogeneous]]

0.613

\(56\)

10168

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} 2 x^{2} y^{\prime \prime }-y^{\prime } x +\left (-x^{2}+1\right ) y&=x^{2}+x +1 \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _linear, _nonhomogeneous]]

0.622

\(57\)

10172

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} 2 x^{2} y^{\prime \prime }-y^{\prime } x +\left (-x^{2}+1\right ) y&=\sin \left (x \right ) \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _linear, _nonhomogeneous]]

0.620

\(58\)

10173

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} 2 x^{2} y^{\prime \prime }-y^{\prime } x +\left (-x^{2}+1\right ) y&=1+\sin \left (x \right ) \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _linear, _nonhomogeneous]]

0.645

\(59\)

10175

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} 2 x^{2} y^{\prime \prime }-y^{\prime } x +\left (-x^{2}+1\right ) y&=\cos \left (x \right )+\sin \left (x \right ) \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _linear, _nonhomogeneous]]

0.666

\(60\)

10183

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} 2 x^{2} y^{\prime \prime }+2 y^{\prime } x -y x&=1 \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _linear, _nonhomogeneous]]

0.590

\(61\)

10242

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime }+y&=\frac {1}{x} \end {array} \]

Series expansion around \(x=0\).

[[_linear, ‘class A‘]]

0.322

\(62\)

10243

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime }+y&=\frac {1}{x^{2}} \end {array} \]

Series expansion around \(x=0\).

[[_linear, ‘class A‘]]

0.366

\(63\)

10245

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime }&=\frac {1}{x} \end {array} \]

Series expansion around \(x=0\).

[_quadrature]

0.213

\(64\)

10246

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }&=\frac {1}{x} \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _quadrature]]

0.467

\(65\)

10247

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+y^{\prime }&=\frac {1}{x} \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _missing_y]]

0.661

\(66\)

10248

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+y&=\frac {1}{x} \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _linear, _nonhomogeneous]]

0.533

\(67\)

10249

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+y^{\prime }+y&=\frac {1}{x} \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _linear, _nonhomogeneous]]

0.622

\(68\)

10348

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime } x +y&=0\\ y \left (0\right )&=1\\ \end {array} \]

Series expansion around \(x=0\).

[_separable]

0.247

\(69\)

14747

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} \left (x^{4}-2 x^{3}+x^{2}\right ) y^{\prime \prime }+2 \left (-1+x \right ) y^{\prime }+x^{2} y&=0 \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.410

\(70\)

14748

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} \left (x^{5}+x^{4}-6 x^{3}\right ) y^{\prime \prime }+x^{2} y^{\prime }+\left (x -2\right ) y&=0 \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.237

\(71\)

15309

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{3} y^{\prime \prime }+x^{2} y^{\prime }+y&=0 \end {array} \]

Series expansion around \(x=0\).

[[_Emden, _Fowler]]

0.350

\(72\)

15310

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{2} y^{\prime \prime }+y^{\prime }-2 y&=0 \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _exact, _linear, _homogeneous]]

0.726

\(73\)

17706

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x \left (x +1\right ) y^{\prime \prime }+\frac {y^{\prime }}{x^{2}}+5 y&=0 \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.205

\(74\)

18378

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime \prime }+x \sin \left (y\right )&=0\\ y \left (0\right )&=\frac {\pi }{2}\\ y^{\prime }\left (0\right )&=0\\ y^{\prime \prime }\left (0\right )&=0\\ \end {array} \]

Series expansion around \(x=0\).

[NONE]

0.057

\(75\)

19581

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{2} y^{\prime }&=y \end {array} \]

Series expansion around \(x=0\).

[_separable]

0.249

\(76\)

19591

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{3} \left (-1+x \right ) y^{\prime \prime }-2 \left (-1+x \right ) y^{\prime }+3 y x&=0 \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.217

\(77\)

19593

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{2} y^{\prime \prime }+\left (-x +2\right ) y^{\prime }&=0 \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _missing_y]]

0.399

\(78\)

19599

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{4} y^{\prime \prime }+\sin \left (x \right ) y&=0 \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.214

\(79\)

19607

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+\frac {y^{\prime }}{x^{2}}-\frac {y}{x^{3}}&=0 \end {array} \]

Series expansion around \(x=0\).

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

0.344

\(80\)

19608

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+\frac {n y^{\prime }}{x^{2}}+\frac {q y}{x^{3}}&=0 \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.260

\(81\)

19622

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{2} y^{\prime \prime }+y^{\prime } x +\left (-n^{2}+x^{2}\right ) y&=0 \end {array} \]

Series expansion around \(x=\infty \).

[_Bessel]

0.228

\(82\)

20146

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{4} y^{\prime \prime }+y^{\prime } x +y&=\frac {1}{x} \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _linear, _nonhomogeneous]]

0.102

\(83\)

20891

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime } x -y^{\prime } x +y&={\mathrm e}^{x}\\ y \left (0\right )&=1\\ y^{\prime }\left (0\right )&=2\\ \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

1.728

\(84\)

20900

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{2} \left (x -2\right ) y^{\prime \prime }+4 \left (x -2\right ) y^{\prime }+3 y&=0 \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.167

\(85\)

20901

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+y x&=0 \end {array} \]

Series expansion around \(x=\infty \).

[[_Emden, _Fowler]]

0.113

\(86\)

21269

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} t x^{\prime \prime }&=t x+1\\ x \left (0\right )&=0\\ x^{\prime }\left (0\right )&=1\\ \end {array} \]

Series expansion around \(t=0\).

[[_2nd_order, _linear, _nonhomogeneous]]

1.011

\(87\)

21627

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{2} y^{\prime \prime }+2 y^{\prime }+y x&=0 \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.343

\(88\)

21639

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{2} y^{\prime \prime }+y^{\prime }+y&=0 \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.329

\(89\)

21655

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} \left (x^{2}+2\right ) y^{\prime \prime }+\left (2 x +\frac {2}{x}\right ) y^{\prime }+2 x^{2} y&=\frac {4 x^{2}+2 x +10}{x^{4}} \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _linear, _nonhomogeneous]]

0.772

\(90\)

21684

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{2} y^{\prime \prime }-\left (x +4\right ) y^{\prime }+2 y&=0 \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.367

\(91\)

21700

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{3} y^{\prime \prime \prime }-4 x^{2} y^{\prime \prime }+8 y^{\prime } x -8 y&=4 \ln \left (x \right ) \end {array} \]

Series expansion around \(x=0\).

[[_3rd_order, _with_linear_symmetries]]

0.049

\(92\)

21701

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{4} y^{\prime \prime \prime \prime }+4 x^{3} y^{\prime \prime \prime }+x^{2} y^{\prime \prime }+y^{\prime } x -y&=-\ln \left (x \right ) \end {array} \]

Series expansion around \(x=0\).

[[_high_order, _exact, _linear, _nonhomogeneous]]

0.042

\(93\)

21900

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} 2 y^{\prime \prime \prime }+y^{\prime \prime } x +2 y^{\prime }+y x&=0\\ y \left (0\right )&=1\\ y^{\prime }\left (0\right )&=0\\ y^{\prime \prime }\left (0\right )&=-1\\ \end {array} \]

Series expansion around \(x=0\).

[[_3rd_order, _with_linear_symmetries]]

0.046

\(94\)

22173

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{2} y^{\prime \prime }+2 y^{\prime }+y x&=0 \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.344

\(95\)

22178

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{3} y^{\prime \prime }+y&=0 \end {array} \]

Series expansion around \(x=0\).

[[_Emden, _Fowler]]

0.246

\(96\)

22181

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} \left (x +1\right )^{3} y^{\prime \prime }+\left (x^{2}-1\right ) \left (x +1\right ) y^{\prime }+\left (-1+x \right ) y&=0 \end {array} \]

Series expansion around \(x=-1\).

[[_2nd_order, _with_linear_symmetries]]

0.405

\(97\)

23434

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime \prime }-\sin \left (x \right ) y&=0\\ y \left (0\right )&=0\\ y^{\prime }\left (0\right )&=1\\ y^{\prime \prime }\left (0\right )&=0\\ \end {array} \]

Series expansion around \(x=0\).

[[_3rd_order, _with_linear_symmetries]]

0.081

\(98\)

23436

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime \prime \prime }-\ln \left (x +1\right ) y&=0\\ y \left (0\right )&=1\\ y^{\prime }\left (0\right )&=1\\ y^{\prime \prime }\left (0\right )&=0\\ y^{\prime \prime \prime }\left (0\right )&=0\\ \end {array} \]

Series expansion around \(x=0\).

[[_high_order, _with_linear_symmetries]]

0.087

\(99\)

23440

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime \prime }-3 x^{2} y^{\prime }+2 y x&=0\\ y \left (0\right )&=1\\ y^{\prime }\left (0\right )&=1\\ y^{\prime \prime }\left (0\right )&=0\\ \end {array} \]

Series expansion around \(x=0\).

[[_3rd_order, _with_linear_symmetries]]

0.076

\(100\)

23441

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime \prime }+4 y^{\prime \prime }+2 y^{\prime }-x^{3} y&=0\\ y \left (0\right )&=1\\ y^{\prime }\left (0\right )&=1\\ y^{\prime \prime }\left (0\right )&=0\\ \end {array} \]

Series expansion around \(x=0\).

[[_3rd_order, _with_linear_symmetries]]

0.076

\(101\)

23446

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime \prime }+y&=0 \end {array} \]

Series expansion around \(x=0\).

[[_3rd_order, _missing_x]]

0.042

\(102\)

23451

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime \prime }-2 y x&=0 \end {array} \]

Series expansion around \(x=0\).

[[_3rd_order, _with_linear_symmetries]]

0.040

\(103\)

23673

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{3} \left (-x^{2}+1\right ) y^{\prime \prime }+\left (2 x -3\right ) y^{\prime }+y x&=0 \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.471

\(104\)

23683

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{2} y^{\prime \prime }+\left (1-x \right ) y^{\prime }+2 y&=0 \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.861

\(105\)

23685

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{3} y^{\prime \prime }-\left (x +1\right ) y&=0 \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.357

\(106\)

24088

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime \prime }-x^{2} y^{\prime \prime }-2 y&=0 \end {array} \]

Series expansion around \(x=0\).

[[_3rd_order, _with_linear_symmetries]]

0.030

\(107\)

24089

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} \left (-x^{4}+1\right ) y^{\prime \prime \prime }-24 y x&=0 \end {array} \]

Series expansion around \(x=0\).

[[_3rd_order, _exact, _linear, _homogeneous]]

0.027

\(108\)

24092

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{2} y^{\prime \prime \prime }-y^{\prime }+y&=0 \end {array} \]

Series expansion around \(x=0\).

[[_3rd_order, _with_linear_symmetries]]

0.026

\(109\)

24093

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{4} y^{\prime \prime \prime }+\frac {x^{2} y^{\prime \prime }}{x +1}-\left (x +1\right ) y&=0 \end {array} \]

Series expansion around \(x=0\).

[[_3rd_order, _with_linear_symmetries]]

0.031

\(110\)

24094

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{4} y^{\prime \prime \prime }-\frac {x^{2} y^{\prime }}{x +1}+y&=0 \end {array} \]

Series expansion around \(x=0\).

[[_3rd_order, _with_linear_symmetries]]

0.029

\(111\)

24096

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{2} y^{\prime }-y&=0 \end {array} \]

Series expansion around \(x=0\).

[_separable]

0.175

\(112\)

25337

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+\frac {y^{\prime }}{t}+\frac {\left (1-t \right ) y}{t^{3}}&=0 \end {array} \]

Series expansion around \(t=0\).

[[_2nd_order, _with_linear_symmetries]]

0.266

\(113\)

27771

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime \prime }-y^{\prime \prime } x +\left (x -2\right ) y^{\prime }+y&=0 \end {array} \]

Series expansion around \(x=0\).

[[_3rd_order, _exact, _linear, _homogeneous]]

0.023

\(114\)

27964

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} w^{\prime \prime \prime }&=z w \end {array} \]

Series expansion around \(z=0\).

[[_3rd_order, _with_linear_symmetries]]

0.021

\(115\)

27979

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} z^{2} w^{\prime \prime }+\left (1+z \right ) w^{\prime }-a w&=0 \end {array} \]

Series expansion around \(z=0\).

[[_2nd_order, _with_linear_symmetries]]

0.388

\(116\)

27981

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} z^{3} \left (1+z \right ) w^{\prime \prime }+z \left (1+2 z \right ) w^{\prime }-\left (1+2 z \right ) w&=0 \end {array} \]

Series expansion around \(z=0\).

[[_2nd_order, _with_linear_symmetries]]

0.174