2.2.271 Problems 27001 to 27100

Table 2.559: Main lookup table. Sorted sequentially by problem number.

#

ODE

CAS classification

Solved?

Maple

Mma

Sympy

time(sec)

27001

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{2} y^{\prime \prime }+3 y^{\prime } x +10 y&=0 \end {array} \]

[[_Emden, _Fowler]]

1.288

27002

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{2} y^{\prime \prime }+6 y^{\prime } x +6 y&=0 \end {array} \]

[[_Emden, _Fowler]]

1.050

27003

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{2} y^{\prime \prime }-5 y^{\prime } x +58 y&=0 \end {array} \]

[[_Emden, _Fowler]]

0.931

27004

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{2} y^{\prime \prime }+25 y^{\prime } x +144 y&=0 \end {array} \]

[[_Emden, _Fowler]]

0.925

27005

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{2} y^{\prime \prime }-11 y^{\prime } x +35 y&=0 \end {array} \]

[[_Emden, _Fowler]]

0.998

27006

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{2} y^{\prime \prime }+5 y^{\prime } x -21 y&=0\\ y \left (2\right )&=1\\ y^{\prime }\left (2\right )&=0\\ \end {array} \]

[[_Emden, _Fowler]]

1.156

27007

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{2} y^{\prime \prime }-y^{\prime } x&=0\\ y \left (2\right )&=5\\ y^{\prime }\left (2\right )&=8\\ \end {array} \]

[[_2nd_order, _missing_y]]

0.852

27008

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{2} y^{\prime \prime }-3 y^{\prime } x +4 y&=0\\ y \left (1\right )&=4\\ y^{\prime }\left (1\right )&=5\\ \end {array} \]

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

1.631

27009

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{2} y^{\prime \prime }+25 y^{\prime } x +144 y&=0\\ y \left (1\right )&=-4\\ y^{\prime }\left (1\right )&=0\\ \end {array} \]

[[_Emden, _Fowler]]

1.286

27010

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{2} y^{\prime \prime }-9 y^{\prime } x +24 y&=0\\ y \left (1\right )&=1\\ y^{\prime }\left (1\right )&=10\\ \end {array} \]

[[_Emden, _Fowler]]

1.829

27011

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{2} y^{\prime \prime }+y^{\prime } x -4 y&=0\\ y \left (1\right )&=7\\ y^{\prime }\left (1\right )&=-3\\ \end {array} \]

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

1.630

27012

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

Using Laplace transform method.

[_quadrature]

0.539

27013

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime }-9 y&=t\\ y \left (0\right )&=5\\ \end {array} \]

Using Laplace transform method.

[[_linear, ‘class A‘]]

0.283

27014

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

Using Laplace transform method.

[[_linear, ‘class A‘]]

0.453

27015

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

Using Laplace transform method.

[[_linear, ‘class A‘]]

0.255

27016

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

Using Laplace transform method.

[[_linear, ‘class A‘]]

0.291

27017

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+y&=1\\ y \left (0\right )&=6\\ y^{\prime }\left (0\right )&=0\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _missing_x]]

0.134

27018

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

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.179

27019

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+9 y&=t^{2}\\ y \left (0\right )&=0\\ y^{\prime }\left (0\right )&=0\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _with_linear_symmetries]]

0.162

27020

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+16 y&=1+t\\ y \left (0\right )&=-2\\ y^{\prime }\left (0\right )&=1\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _with_linear_symmetries]]

0.211

27021

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

Using Laplace transform method.

[[_2nd_order, _with_linear_symmetries]]

0.168

27022

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+4 y&=\left \{\begin {array}{cc} 0 & 0\le t <4 \\ 3 & 4\le t \end {array}\right .\\ y \left (0\right )&=1\\ y^{\prime }\left (0\right )&=0\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.303

27023

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }-2 y^{\prime }-3 y&=\left \{\begin {array}{cc} 0 & 0\le t <4 \\ 12 & 4\le t \end {array}\right .\\ y \left (0\right )&=1\\ y^{\prime }\left (0\right )&=0\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.216

27024

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime \prime }-8 y&=\left \{\begin {array}{cc} 0 & 0\le t <6 \\ 2 & 6\le t \end {array}\right .\\ y \left (0\right )&=0\\ y^{\prime }\left (0\right )&=0\\ y^{\prime \prime }\left (0\right )&=0\\ \end {array} \]

Using Laplace transform method.

[[_3rd_order, _linear, _nonhomogeneous]]

0.251

27025

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

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.226

27026

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime \prime }-y^{\prime \prime }+4 y^{\prime }-4 y&=\left \{\begin {array}{cc} 1 & 0\le t <5 \\ 2 & 5\le t \end {array}\right .\\ y \left (0\right )&=0\\ y^{\prime }\left (0\right )&=0\\ y^{\prime \prime }\left (0\right )&=1\\ \end {array} \]

Using Laplace transform method.

[[_3rd_order, _linear, _nonhomogeneous]]

0.425

27027

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

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.487

27028

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

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.245

27029

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+10 y^{\prime }+24 y&=f \left (t \right )\\ y \left (0\right )&=1\\ y^{\prime }\left (0\right )&=0\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.277

27030

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }-8 y^{\prime }+12 y&=f \left (t \right )\\ y \left (0\right )&=-3\\ y^{\prime }\left (0\right )&=2\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.231

27031

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }-4 y^{\prime }-5 y&=f \left (t \right )\\ y \left (0\right )&=2\\ y^{\prime }\left (0\right )&=1\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.264

27032

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+9 y&=f \left (t \right )\\ y \left (0\right )&=-1\\ y^{\prime }\left (0\right )&=1\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.349

27033

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

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.319

27034

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

Using Laplace transform method.

[[_3rd_order, _linear, _nonhomogeneous]]

0.266

27035

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime \prime \prime }-11 y^{\prime \prime }+18 y&=f \left (t \right )\\ y \left (0\right )&=0\\ y^{\prime }\left (0\right )&=0\\ y^{\prime \prime }\left (0\right )&=0\\ y^{\prime \prime \prime }\left (0\right )&=0\\ \end {array} \]

Using Laplace transform method.

[[_high_order, _linear, _nonhomogeneous]]

0.344

27036

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

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.222

27037

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }-4 y^{\prime }+13 y&=4 \delta \left (t -3\right )\\ y \left (0\right )&=0\\ y^{\prime }\left (0\right )&=0\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.191

27038

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

Using Laplace transform method.

[[_3rd_order, _linear, _nonhomogeneous]]

0.169

27039

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+16 y^{\prime }&=12 \delta \left (t -\frac {5 \pi }{8}\right )\\ y \left (0\right )&=3\\ y^{\prime }\left (0\right )&=0\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _missing_y]]

0.232

27040

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+5 y^{\prime }+6 y&=8 \delta \left (t \right )\\ y \left (0\right )&=3\\ y^{\prime }\left (0\right )&=0\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _linear, _nonhomogeneous]]

0.148

27041

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

system_of_ODEs

0.151

27042

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

system_of_ODEs

0.112

27043

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

system_of_ODEs

0.115

27044

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

system_of_ODEs

0.129

27045

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

system_of_ODEs

0.148

27046

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

system_of_ODEs

0.122

27047

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

system_of_ODEs

0.118

27048

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

system_of_ODEs

0.143

27049

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

system_of_ODEs

0.107

27050

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

system_of_ODEs

0.126

27051

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y_{1}^{\prime }-2 y_{2}^{\prime }+3 y_{1}&=0\\ y_{1}-4 y_{2}^{\prime }+3 y_{3}&=t\\ y_{1}-2 y_{2}^{\prime }+3 y_{3}^{\prime }&=-1\\ \end {array} \]

system_of_ODEs

0.262

27052

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

Using Laplace transform method.

[_separable]

1.116

27053

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+4 y^{\prime } t -4 y&=0\\ y \left (0\right )&=0\\ y^{\prime }\left (0\right )&=-7\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _with_linear_symmetries]]

0.385

27054

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }-16 y^{\prime } t +32 y&=0\\ y \left (0\right )&=0\\ y^{\prime }\left (0\right )&=0\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _with_linear_symmetries]]

0.328

27055

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+8 y^{\prime } t -8 y&=0\\ y \left (0\right )&=0\\ y^{\prime }\left (0\right )&=-4\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _with_linear_symmetries]]

0.380

27056

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

Using Laplace transform method.

[[_2nd_order, _exact, _linear, _homogeneous]]

0.392

27057

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

Using Laplace transform method.

[_erf]

0.430

27058

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }+8 y^{\prime } t&=0\\ y \left (0\right )&=4\\ y^{\prime }\left (0\right )&=0\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _missing_y]]

0.354

27059

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

Using Laplace transform method.

[[_2nd_order, _with_linear_symmetries]]

0.347

27060

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }-8 y^{\prime } t +16 y&=3\\ y \left (0\right )&=0\\ y^{\prime }\left (0\right )&=0\\ \end {array} \]

Using Laplace transform method.

[[_2nd_order, _with_linear_symmetries]]

0.478

27061

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

Using Laplace transform method.

[[_2nd_order, _with_linear_symmetries]]

0.400

27062

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

Series expansion around \(x=0\).

[_linear]

0.480

27063

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

Series expansion around \(x=0\).

[_linear]

0.451

27064

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

Series expansion around \(x=0\).

[_linear]

0.534

27065

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

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.421

27066

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

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.328

27067

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

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.391

27068

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

Series expansion around \(x=0\).

[[_2nd_order, _linear, _nonhomogeneous]]

0.483

27069

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

Series expansion around \(x=0\).

[[_2nd_order, _linear, _nonhomogeneous]]

0.394

27070

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

Series expansion around \(x=0\).

[[_2nd_order, _linear, _nonhomogeneous]]

0.467

27071

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

Series expansion around \(x=0\).

[[_2nd_order, _missing_y]]

0.375

27072

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

Series expansion around \(x=0\).

[_Laguerre]

0.763

27073

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

Series expansion around \(x=0\).

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

1.408

27074

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

Series expansion around \(x=0\).

[[_2nd_order, _exact, _linear, _homogeneous]]

0.838

27075

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} 4 x^{2} y^{\prime \prime }+4 y^{\prime } x +\left (4 x^{2}-9\right ) y&=0 \end {array} \]

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.802

27076

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

Series expansion around \(x=0\).

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

0.853

27077

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

Series expansion around \(x=0\).

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

0.630

27078

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

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.734

27079

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

Series expansion around \(x=0\).

[[_Emden, _Fowler]]

1.278

27080

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

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.741

27081

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

Series expansion around \(x=0\).

[[_2nd_order, _with_linear_symmetries]]

0.695

27082

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

[_quadrature]

33.664

27083

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

[[_linear, ‘class A‘]]

4.852

27084

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

[_linear]

4.230

27085

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

[[_linear, ‘class A‘]]

2.783

27086

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

[_linear]

4.995

27087

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

[_quadrature]

1.536

27088

\(\left [\begin {array}{cc} 1 & 3 \\ 2 & 1 \end {array}\right ]\)

Eigenvectors

N/A

N/A

N/A

0.353

27089

\(\left [\begin {array}{cc} -2 & 0 \\ 1 & 4 \end {array}\right ]\)

Eigenvectors

N/A

N/A

N/A

0.277

27090

\(\left [\begin {array}{cc} -5 & 0 \\ 1 & 2 \end {array}\right ]\)

Eigenvectors

N/A

N/A

N/A

0.283

27091

\(\left [\begin {array}{cc} 6 & -2 \\ -3 & 4 \end {array}\right ]\)

Eigenvectors

N/A

N/A

N/A

0.382

27092

\(\left [\begin {array}{cc} 1 & -6 \\ 2 & 2 \end {array}\right ]\)

Eigenvectors

N/A

N/A

N/A

0.433

27093

\(\left [\begin {array}{cc} 0 & 1 \\ 0 & 0 \end {array}\right ]\)

Eigenvectors

N/A

N/A

N/A

0.153

27094

\(\left [\begin {array}{ccc} 2 & 0 & 0 \\ 1 & 0 & 2 \\ 0 & 0 & 3 \end {array}\right ]\)

Eigenvectors

N/A

N/A

N/A

0.753

27095

\(\left [\begin {array}{ccc} -2 & 1 & 0 \\ 1 & 3 & 0 \\ 0 & 0 & -1 \end {array}\right ]\)

Eigenvectors

N/A

N/A

N/A

0.887

27096

\(\left [\begin {array}{ccc} -3 & 1 & 1 \\ 0 & 0 & 0 \\ 0 & 1 & 0 \end {array}\right ]\)

Eigenvectors

N/A

N/A

N/A

0.590

27097

\(\left [\begin {array}{ccc} 0 & 0 & -1 \\ 0 & 0 & 1 \\ 2 & 0 & 0 \end {array}\right ]\)

Eigenvectors

N/A

N/A

N/A

0.914

27098

\(\left [\begin {array}{ccc} -14 & 1 & 0 \\ 0 & 2 & 0 \\ 1 & 0 & 2 \end {array}\right ]\)

Eigenvectors

N/A

N/A

N/A

0.592

27099

\(\left [\begin {array}{ccc} 3 & 0 & 0 \\ 1 & -2 & -8 \\ 0 & -5 & 1 \end {array}\right ]\)

Eigenvectors

N/A

N/A

N/A

0.775

27100

\(\left [\begin {array}{ccc} 1 & -2 & 0 \\ 0 & 0 & 0 \\ -5 & 0 & 7 \end {array}\right ]\)

Eigenvectors

N/A

N/A

N/A

0.775