2.2.101 Problems 10001 to 10100

Table 2.219: Main lookup table. Sorted sequentially by problem number.

#

ODE

CAS classification

Solved?

Maple

Mma

Sympy

time(sec)

10001

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

[_quadrature]

0.658

10002

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime }&=\frac {-y x -1}{4 x^{3} y-2 x^{2}} \end {array} \]

[[_homogeneous, ‘class G‘], _rational, [_Abel, ‘2nd type‘, ‘class B‘]]

130.819

10003

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

[[_1st_order, _with_linear_symmetries], _Clairaut]

0.553

10004

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

[_quadrature]

289.648

10005

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

[‘y=_G(x,y’)‘]

2.820

10006

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

[_Bernoulli]

5.429

10007

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

[[_1st_order, _with_linear_symmetries], _Chini]

48.161

10008

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

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

18.640

10009

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

[_separable]

5.775

10010

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

[_quadrature]

0.446

10011

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

[_quadrature]

1.072

10012

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

[_quadrature]

0.451

10013

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

[_quadrature]

0.992

10014

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

[_quadrature]

0.838

10015

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

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

1.862

10016

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

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

8.661

10017

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

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

22.265

10018

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

[_quadrature]

1.294

10019

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} p^{\prime }&=a p-b p^{2}\\ p \left (\operatorname {t0} \right )&=\operatorname {p0}\\ \end {array} \]

[_quadrature]

52.973

10020

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

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

6.380

10021

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

[_Clairaut]

14.326

10022

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

[_rational, _Riccati]

4.388

10023

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

[_rational, _Riccati]

71.935

10024

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} u^{\prime }+u^{2}&=\frac {1}{x^{{4}/{5}}} \end {array} \]

[_rational, _Riccati]

0.486

10025

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

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

17.660

10026

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

[[_2nd_order, _missing_x]]

0.290

10027

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

[[_2nd_order, _missing_x]]

0.806

10028

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

[[_2nd_order, _missing_x]]

0.491

10029

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

[[_2nd_order, _linear, _nonhomogeneous]]

0.424

10030

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

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

6.388

10031

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

[_dAlembert]

0.702

10032

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

[_quadrature]

2.885

10033

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

[[_2nd_order, _missing_y]]

1.609

10034

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} \left (t^{2}+9\right ) y^{\prime \prime }+2 y^{\prime } t&=0\\ y \left (3\right )&=2 \pi \\ y^{\prime }\left (3\right )&={\frac {2}{3}}\\ \end {array} \]

[[_2nd_order, _missing_y]]

1.353

10035

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

[[_Emden, _Fowler]]

2.011

10036

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

[[_2nd_order, _missing_y]]

1.368

10037

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

[[_2nd_order, _missing_y]]

0.896

10038

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

[[_2nd_order, _with_linear_symmetries]]

16.158

10039

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

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

1.955

10040

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

[[_2nd_order, _quadrature]]

0.964

10041

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

[[_2nd_order, _quadrature]]

1.083

10042

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

[[_2nd_order, _quadrature]]

0.809

10043

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

[[_2nd_order, _quadrature]]

0.752

10044

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

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

3.318

10045

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

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

2.888

10046

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

[[_2nd_order, _quadrature]]

1.181

10047

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

[[_2nd_order, _quadrature]]

0.046

10048

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

[[_2nd_order, _missing_x], [_2nd_order, _reducible, _mu_x_y1]]

21.688

10049

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

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

0.288

10050

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

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

0.421

10051

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

[[_2nd_order, _quadrature]]

0.057

10052

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

[NONE]

0.373

10053

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

[[_2nd_order, _missing_x], [_2nd_order, _reducible, _mu_x_y1]]

6.276

10054

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

[[_2nd_order, _missing_x], [_2nd_order, _reducible, _mu_x_y1]]

7.297

10055

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

[[_2nd_order, _missing_x], [_2nd_order, _reducible, _mu_x_y1]]

1.592

10056

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

[[_2nd_order, _quadrature]]

0.098

10057

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{\prime }&=9 x+4 y\\ y^{\prime }&=-6 x-y\\ z^{\prime }&=6 x+4 y+3 z\\ \end {array} \]

system_of_ODEs

0.769

10058

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{\prime }&=x-3 y\\ y^{\prime }&=3 x+7 y\\ \end {array} \]

system_of_ODEs

0.446

10059

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

system_of_ODEs

0.424

10060

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{\prime }&=7 x+y\\ y^{\prime }&=-4 x+3 y\\ \end {array} \]

system_of_ODEs

0.457

10061

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

system_of_ODEs

0.558

10062

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

system_of_ODEs

0.697

10063

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} x^{\prime }&=4 A k \left (\frac {x}{A}\right )^{{3}/{4}}-3 k x \end {array} \]

[_quadrature]

13.217

10064

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

[[_homogeneous, ‘class A‘], _dAlembert]

1.525

10065

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

[[_homogeneous, ‘class A‘], _dAlembert]

2.140

10066

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

[_separable]

139.628

10067

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

[[_Riccati, _special]]

9.185

10068

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

[_quadrature]

31.137

10069

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} z^{\prime \prime }+3 z^{\prime }+2 z&=24 \,{\mathrm e}^{-3 t}-24 \,{\mathrm e}^{-4 t} \end {array} \]

[[_2nd_order, _linear, _nonhomogeneous]]

0.690

10070

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

[_quadrature]

7.111

10071

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

[_Riccati]

27.513

10072

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

[_Bernoulli]

4.254

10073

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

[[_2nd_order, _exact, _nonlinear], [_2nd_order, _with_linear_symmetries], [_2nd_order, _reducible, _mu_x_y1], [_2nd_order, _reducible, _mu_y_y1], [_2nd_order, _reducible, _mu_xy]]

36.883

10074

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

[[_2nd_order, _missing_x]]

0.401

10075

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

[[_2nd_order, _missing_x]]

0.350

10076

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

[[_2nd_order, _missing_x]]

0.520

10077

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

[[_2nd_order, _exact, _nonlinear], [_2nd_order, _reducible, _mu_x_y1], [_2nd_order, _reducible, _mu_y_y1], [_2nd_order, _reducible, _mu_xy]]

51.904

10078

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

[_Riccati]

31.582

10079

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

[[_2nd_order, _with_linear_symmetries]]

0.875

10080

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

[[_2nd_order, _with_linear_symmetries]]

0.746

10081

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

[[_2nd_order, _with_linear_symmetries]]

0.702

10082

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

[[_2nd_order, _with_linear_symmetries]]

1.024

10083

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

[[_2nd_order, _linear, _nonhomogeneous]]

1.180

10084

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

[[_2nd_order, _linear, _nonhomogeneous]]

0.993

10085

\[ \begin {array}{>{\displaystyle }r @{\;} >{\displaystyle }l} y^{\prime \prime }-y^{\prime } x -y x -x^{5}+24&=0 \end {array} \]

[[_2nd_order, _linear, _nonhomogeneous]]

1.065

10086

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

[[_2nd_order, _with_linear_symmetries]]

0.676

10087

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

[[_2nd_order, _with_linear_symmetries]]

0.961

10088

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

[[_2nd_order, _linear, _nonhomogeneous]]

1.023

10089

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

[[_2nd_order, _with_linear_symmetries]]

4.906

10090

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

[[_2nd_order, _with_linear_symmetries]]

4.687

10091

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

[[_2nd_order, _linear, _nonhomogeneous]]

4.724

10092

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

[[_2nd_order, _with_linear_symmetries]]

0.298

10093

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

[[_2nd_order, _linear, _nonhomogeneous]]

1.101

10094

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

[[_2nd_order, _with_linear_symmetries]]

0.312

10095

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

[[_2nd_order, _with_linear_symmetries]]

0.313

10096

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

[[_2nd_order, _with_linear_symmetries]]

0.309

10097

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

[[_2nd_order, _with_linear_symmetries]]

0.324

10098

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

[[_2nd_order, _linear, _nonhomogeneous]]

0.902

10099

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

[[_2nd_order, _linear, _nonhomogeneous]]

0.308

10100

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

[[_2nd_order, _linear, _nonhomogeneous]]

0.312