2.3.211 Problems 21001 to 21100

Table 2.965: Main lookup table. Sorted by time used to solve.

#

ID

ODE

Solved?

Maple

Mma

Sympy

time(sec)

21001

18057

\begin{align*} 1+{\mathrm e}^{\frac {x}{y}}+{\mathrm e}^{\frac {x}{y}} \left (1-\frac {x}{y}\right ) y^{\prime }&=0 \\ y \left (1\right ) &= 1 \\ \end{align*}

6.725

21002

26059

\begin{align*} {y^{\prime \prime }}^{2}&={y^{\prime }}^{2} \left (1+{y^{\prime }}^{2}\right ) \\ \end{align*}

6.725

21003

25003

\begin{align*} t^{2} y^{\prime }&=y^{2}+t y+t^{2} \\ y \left (1\right ) &= 1 \\ \end{align*}

6.727

21004

22804

\begin{align*} y^{\prime } x&=y^{2} x^{2}-y+1 \\ \end{align*}

6.728

21005

7430

\begin{align*} y x^{\prime }+2 x&=5 y^{3} \\ \end{align*}

6.732

21006

747

\begin{align*} x^{2} y^{\prime }+2 y x&=5 y^{3} \\ \end{align*}

6.737

21007

3481

\begin{align*} \left (2 \sin \left (y\right )-x \right ) y^{\prime }&=\tan \left (y\right ) \\ y \left (0\right ) &= \frac {\pi }{2} \\ \end{align*}

6.737

21008

13380

\begin{align*} y^{\prime }&=y^{2}+a \cos \left (\beta x \right ) y+a b \cos \left (\beta x \right )-b^{2} \\ \end{align*}

6.737

21009

5227

\begin{align*} \left (1+y+y x +y^{2}\right ) y^{\prime }+1+y&=0 \\ \end{align*}

6.738

21010

17326

\begin{align*} t^{2} y+\sin \left (t \right )+\left (\frac {t^{3}}{3}-\cos \left (y\right )\right ) y^{\prime }&=0 \\ \end{align*}

6.738

21011

24392

\begin{align*} 6 y x -3 y^{2}+2 y+2 \left (x -y\right ) y^{\prime }&=0 \\ \end{align*}

6.740

21012

23403

\begin{align*} 5 y^{\prime \prime }+\frac {3 y^{\prime }}{x -3}+\frac {3 y}{\left (x -3\right )^{2}}&=0 \\ \end{align*}

6.741

21013

23368

\begin{align*} 5 x^{2} y^{\prime \prime }-3 y^{\prime } x +3 y&=0 \\ \end{align*}

6.745

21014

19765

\begin{align*} x^{2} y^{\prime \prime }+3 y^{\prime } x +y&=\frac {1}{x} \\ \end{align*}

6.747

21015

13455

\begin{align*} y^{\prime } x&=f \left (x \right ) y^{2}+n y+a \,x^{2 n} f \left (x \right ) \\ \end{align*}

6.748

21016

12033

\begin{align*} y^{\prime }&=\frac {\left (\ln \left (y\right ) x +\ln \left (y\right )+x^{4}\right ) y}{x \left (x +1\right )} \\ \end{align*}

6.749

21017

5143

\begin{align*} x \left (a +y\right ) y^{\prime }&=y \left (B x +A \right ) \\ \end{align*}

6.753

21018

5555

\begin{align*} \left (x +y\right ) {y^{\prime }}^{2}+2 y^{\prime } x -y&=0 \\ \end{align*}

6.755

21019

4780

\begin{align*} y^{\prime } x +a +x y^{2}&=0 \\ \end{align*}

6.757

21020

14324

\begin{align*} t x^{\prime \prime }+4 x^{\prime }+\frac {2 x}{t}&=0 \\ \end{align*}

6.763

21021

9488

\begin{align*} y^{\prime }&=y^{2}-x \\ y \left (0\right ) &= 1 \\ \end{align*}

6.766

21022

23112

\begin{align*} y^{\prime }&=\sqrt {y} \\ \end{align*}

6.766

21023

3040

\begin{align*} y x -y^{2}-x^{2} y^{\prime }&=0 \\ y \left (1\right ) &= 1 \\ \end{align*}

6.767

21024

16295

\begin{align*} y^{\prime }+3 \cot \left (x \right ) y&=6 \cos \left (x \right ) y^{{2}/{3}} \\ \end{align*}

6.769

21025

19809

\begin{align*} x^{2}+\ln \left (y\right )+\frac {x y^{\prime }}{y}&=0 \\ \end{align*}

6.771

21026

23162

\begin{align*} y^{\prime }-\frac {x}{x^{2}+1}&=-\frac {x y}{x^{2}+1} \\ \end{align*}

6.774

21027

19337

\begin{align*} 2 x y^{2}-y+y^{\prime } x&=0 \\ \end{align*}

6.775

21028

2964

\begin{align*} y^{\prime } x -2 x^{4}-2 y&=0 \\ \end{align*}

6.778

21029

9520

\begin{align*} \cos \left (x \right ) y^{\prime \prime }+y^{\prime }+5 y&=0 \\ \end{align*}
Series expansion around \(x=1\).

6.778

21030

4852

\begin{align*} 2 y^{\prime } x&=y \left (1+y^{2}\right ) \\ \end{align*}

6.779

21031

4943

\begin{align*} \left (a +x \right )^{2} y^{\prime }&=2 \left (a +x \right ) \left (b +y\right ) \\ \end{align*}

6.779

21032

5000

\begin{align*} \left (c \,x^{2}+b x +a \right )^{2} \left (y^{\prime }+y^{2}\right )+A&=0 \\ \end{align*}

6.779

21033

5754

\begin{align*} a \csc \left (x \right )^{2} y+y^{\prime \prime }&=0 \\ \end{align*}

6.779

21034

1670

\begin{align*} y y^{\prime } x&=3 x^{6}+6 y^{2} \\ \end{align*}

6.780

21035

17159

\begin{align*} y-\left (x +3 y^{2}\right ) y^{\prime }&=0 \\ \end{align*}

6.783

21036

14224

\begin{align*} \left (1+t \right ) x^{\prime }+x^{2}&=0 \\ \end{align*}

6.784

21037

19898

\begin{align*} -y^{\prime } x +y&=a \left (y^{\prime }+y^{2}\right ) \\ \end{align*}

6.785

21038

3672

\begin{align*} y^{\prime }&=\left (4 x +y+2\right )^{2} \\ \end{align*}

6.786

21039

5335

\begin{align*} \left (1+\sqrt {x +y}\right ) y^{\prime }+1&=0 \\ \end{align*}

6.786

21040

3547

\begin{align*} -y+y^{\prime } x&=\sqrt {9 x^{2}+y^{2}} \\ \end{align*}

6.787

21041

21087

\begin{align*} x^{\prime }&=\frac {t^{2}+x^{2}}{2 t x} \\ \end{align*}

6.787

21042

5183

\begin{align*} x \left (y x +2\right ) y^{\prime }&=3+2 x^{3}-2 y-x y^{2} \\ \end{align*}

6.788

21043

1174

\begin{align*} y^{\prime }&=-\frac {4 t}{y} \\ \end{align*}

6.789

21044

3491

\begin{align*} -\frac {{y^{\prime }}^{2}}{y^{2}}+\frac {y^{\prime \prime }}{y}+\frac {2 a \coth \left (2 a x \right ) y^{\prime }}{y}&=2 a^{2} \\ \end{align*}

6.792

21045

21073

\begin{align*} x^{2}+2 y x -y^{2}+\left (x -y\right )^{2} y^{\prime }&=0 \\ y \left (1\right ) &= 1 \\ \end{align*}

6.792

21046

4262

\begin{align*} \left (x +3 x^{3} y^{4}\right ) y^{\prime }+y&=0 \\ \end{align*}

6.796

21047

4729

\begin{align*} y^{\prime }&=a +b \sin \left (y\right ) \\ \end{align*}

6.797

21048

15620

\begin{align*} y^{\prime }&=y^{3} \\ y \left (-1\right ) &= -1 \\ \end{align*}

6.798

21049

2957

\begin{align*} y^{\prime } x +2 y&=x^{2} \\ \end{align*}

6.802

21050

3671

\begin{align*} y^{\prime }&=\left (9 x -y\right )^{2} \\ y \left (0\right ) &= 0 \\ \end{align*}

6.802

21051

4442

\begin{align*} x y^{3}-1+x^{2} y^{2} y^{\prime }&=0 \\ \end{align*}

6.802

21052

5670

\begin{align*} {y^{\prime }}^{4}+f \left (x \right ) \left (y-a \right )^{3} \left (y-b \right )^{3} \left (y-c \right )^{2}&=0 \\ \end{align*}

6.802

21053

10256

\begin{align*} x^{2} y^{\prime }+{\mathrm e}^{-y}&=0 \\ \end{align*}

6.803

21054

7398

\begin{align*} \frac {y^{\prime }}{2}&=\sqrt {1+y}\, \cos \left (x \right ) \\ y \left (\pi \right ) &= 0 \\ \end{align*}

6.807

21055

15046

\begin{align*} x^{\prime }&=\frac {x}{t}+\frac {x^{2}}{t^{3}} \\ x \left (2\right ) &= 4 \\ \end{align*}

6.809

21056

7443

\begin{align*} y^{\prime }+\frac {3 y}{x}&=x^{2} \\ \end{align*}

6.811

21057

8166

\begin{align*} y^{\prime }&=25+y^{2} \\ \end{align*}

6.813

21058

2357

\begin{align*} y^{\prime }&=\frac {\left (1+\cos \left (4 t \right )\right ) y}{4}-\frac {\left (1-\cos \left (4 t \right )\right ) y^{2}}{800} \\ y \left (0\right ) &= 100 \\ \end{align*}

6.816

21059

13271

\begin{align*} x^{2} \left (a +x \right ) \left (y^{\prime }+\lambda y^{2}\right )+x \left (b x +c \right ) y+x \alpha +\beta &=0 \\ \end{align*}

6.816

21060

10131

\begin{align*} y^{\prime \prime }-x^{3} y^{\prime }-x^{3} y-x^{4}-x^{3}&=0 \\ \end{align*}

6.833

21061

15152

\begin{align*} y^{\prime \prime }+\tan \left (x \right ) y^{\prime }+\cot \left (x \right ) y&=0 \\ y \left (\frac {\pi }{4}\right ) &= 1 \\ y^{\prime }\left (\frac {\pi }{4}\right ) &= 0 \\ \end{align*}

6.833

21062

25683

\begin{align*} 3 y^{\prime } x +5 y&=10 \\ \end{align*}

6.833

21063

23018

\begin{align*} x^{\prime \prime }+36 x&=0 \\ x \left (0\right ) &= 5 \\ x \left (\frac {\pi }{12}\right ) &= 7 \\ \end{align*}

6.837

21064

7019

\begin{align*} \left (3+6 y x +x^{2}\right ) y^{\prime }+2 x +2 y x +3 y^{2}&=0 \\ \end{align*}

6.839

21065

21255

\begin{align*} x^{\prime \prime }&=x^{3}-x \\ x \left (0\right ) &= 0 \\ x^{\prime }\left (0\right ) &= {\frac {1}{2}} \\ \end{align*}

6.839

21066

1603

\begin{align*} y^{\prime }&=a y-b y^{2} \\ y \left (0\right ) &= \operatorname {y0} \\ \end{align*}

6.842

21067

17238

\begin{align*} t^{2} y+t^{3} y^{\prime }&=0 \\ \end{align*}

6.842

21068

25879

\begin{align*} 3 x +2 y+1-\left (3 x +2 y-1\right ) y^{\prime }&=0 \\ \end{align*}

6.848

21069

5578

\begin{align*} y^{2} {y^{\prime }}^{2}-2 y y^{\prime } x -x^{2}+2 y^{2}&=0 \\ \end{align*}

6.851

21070

12228

\begin{align*} y^{\prime }&=-\frac {216 y}{-216 y^{4}-252 y^{3}-396 y^{2}-216 y+36 x^{2}-72 y x +60 y^{5}-36 x y^{3}-72 x y^{2}-24 y^{4} x +4 y^{8}+12 y^{7}+33 y^{6}} \\ \end{align*}

6.852

21071

1143

\begin{align*} y^{\prime }&=\frac {2 x}{1+2 y} \\ y \left (2\right ) &= 0 \\ \end{align*}

6.854

21072

2967

\begin{align*} y^{\prime } x&=5 y+x +1 \\ \end{align*}

6.860

21073

14071

\begin{align*} x^{3} {y^{\prime }}^{2}+x^{2} y y^{\prime }+1&=0 \\ \end{align*}

6.861

21074

2500

\begin{align*} y^{\prime }&=\frac {2 y}{t}+\frac {y^{2}}{t^{2}} \\ \end{align*}

6.862

21075

23940

\begin{align*} y^{\prime }&=f \left (x \right )+a y+b z \\ z^{\prime }&=g \left (x \right )+c y+d z \\ \end{align*}

6.862

21076

25614

\begin{align*} y^{\prime }-a y&={\mathrm e}^{i \omega t} \\ \end{align*}

6.862

21077

799

\begin{align*} \left (2 x +1\right ) y^{\prime }+y&=\left (2 x +1\right )^{{3}/{2}} \\ \end{align*}

6.871

21078

17314

\begin{align*} y^{\prime }&=\frac {{\mathrm e}^{5 t}}{y^{4}} \\ \end{align*}

6.875

21079

4681

\begin{align*} y^{\prime }&=x^{n} \left (a +b y^{2}\right ) \\ \end{align*}

6.878

21080

11586

\begin{align*} \left (a y+b x +c \right )^{2} y^{\prime }+\left (\alpha y+\beta x +\gamma \right )^{2}&=0 \\ \end{align*}

6.878

21081

24173

\begin{align*} x \cos \left (\frac {y}{x}\right )^{2}-y+y^{\prime } x&=0 \\ y \left (1\right ) &= \frac {\pi }{4} \\ \end{align*}

6.879

21082

25743

\begin{align*} 3 y^{\prime } x -2 y&=0 \\ \end{align*}

6.879

21083

24295

\begin{align*} y&=\left (2 x +1\right ) \left (1-y^{\prime }\right ) \\ \end{align*}

6.884

21084

5820

\begin{align*} -a y-y^{\prime } x +y^{\prime \prime }&=0 \\ \end{align*}

6.885

21085

6572

\begin{align*} y^{\prime } y^{\prime \prime }&=a^{2} x \\ \end{align*}

6.885

21086

779

\begin{align*} y^{\prime } x +2 y&=6 \sqrt {y}\, x^{2} \\ \end{align*}

6.888

21087

22045

\begin{align*} y+x^{3} y^{3}+y^{\prime } x&=0 \\ \end{align*}

6.888

21088

7466

\begin{align*} y \,{\mathrm e}^{y x}-\frac {1}{y}+\left (x \,{\mathrm e}^{y x}+\frac {x}{y^{2}}\right ) y^{\prime }&=0 \\ y \left (1\right ) &= 1 \\ \end{align*}

6.889

21089

25735

\begin{align*} y^{\prime } x&=2 y \\ \end{align*}

6.894

21090

14521

\begin{align*} x^{2}-2 y+y^{\prime } x&=0 \\ \end{align*}

6.900

21091

3471

\begin{align*} y^{\prime }+\frac {x y}{a^{2}+x^{2}}&=x \\ \end{align*}

6.901

21092

7352

\begin{align*} y^{\prime }+y x&=\frac {x}{y} \\ \end{align*}

6.901

21093

10254

\begin{align*} y^{\prime }&=\frac {y}{2 y \ln \left (y\right )+y-x} \\ \end{align*}

6.906

21094

15039

\begin{align*} 2 x +2 y-1+\left (x +y-2\right ) y^{\prime }&=0 \\ \end{align*}

6.911

21095

20548

\begin{align*} y^{\prime \prime }&={\mathrm e}^{2 y} \\ y \left (0\right ) &= 0 \\ y^{\prime }\left (0\right ) &= 0 \\ \end{align*}

6.911

21096

4917

\begin{align*} \left (-x^{2}+1\right ) y^{\prime }&=-1+y^{2} \\ \end{align*}

6.914

21097

5860

\begin{align*} -2 \left (\cos \left (x \right )+1\right ) \sec \left (x \right ) y-\left (2+3 \cos \left (x \right )\right ) \csc \left (x \right ) y^{\prime }+y^{\prime \prime }&=0 \\ \end{align*}

6.917

21098

25646

\begin{align*} y^{\prime }&=y^{2}-t \\ \end{align*}

6.921

21099

4847

\begin{align*} \left (a +x \right ) y^{\prime }&=b x +c y \\ \end{align*}

6.923

21100

19307

\begin{align*} 2 x \left (1+\sqrt {x^{2}-y}\right )&=\sqrt {x^{2}-y}\, y^{\prime } \\ \end{align*}

6.923