2.3.151 Problems 15001 to 15100

Table 2.845: Main lookup table. Sorted by time used to solve.

#

ID

ODE

Solved?

Maple

Mma

Sympy

time(sec)

15001

7850

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

1.812

15002

13854

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

1.812

15003

18304

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

1.812

15004

19791

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

1.812

15005

20725

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

1.812

15006

25295

\begin{align*} y^{\prime }+5 y&=\left \{\begin {array}{cc} -5 & 0\le t <1 \\ 5 & 1\le t \end {array}\right . \\ y \left (0\right ) &= 1 \\ \end{align*}
Using Laplace transform method.

1.812

15007

25605

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

1.812

15008

1103

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

1.813

15009

17768

\begin{align*} y^{\prime \prime }+9 y&=\sin \left (3 t \right ) \\ y \left (0\right ) &= 6 \\ y^{\prime }\left (0\right ) &= 0 \\ \end{align*}

1.813

15010

7141

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

1.814

15011

20692

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

1.814

15012

9078

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

1.815

15013

11473

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

1.815

15014

9058

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

1.816

15015

18725

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

1.816

15016

24833

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

1.816

15017

3278

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

1.817

15018

8977

\begin{align*} x^{2} y^{\prime \prime }-5 y^{\prime } x +9 y&=x^{2} \\ \end{align*}

1.817

15019

12288

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

1.817

15020

12562

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

1.817

15021

16520

\begin{align*} y^{\prime \prime }+16 y&=0 \\ y \left (0\right ) &= 4 \\ y^{\prime }\left (0\right ) &= 12 \\ \end{align*}

1.817

15022

2630

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

1.818

15023

8914

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

1.818

15024

1499

\begin{align*} y^{\prime \prime }+y^{\prime }+\frac {5 y}{4}&=t -\operatorname {Heaviside}\left (t -\frac {\pi }{2}\right ) \left (t -\frac {\pi }{2}\right ) \\ y \left (0\right ) &= 0 \\ y^{\prime }\left (0\right ) &= 0 \\ \end{align*}
Using Laplace transform method.

1.819

15025

15635

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

1.819

15026

20565

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

1.819

15027

23731

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

1.821

15028

25532

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

1.821

15029

18

\begin{align*} x^{\prime \prime }&=50 \sin \left (5 t \right ) \\ x \left (0\right ) &= 8 \\ x^{\prime }\left (0\right ) &= -10 \\ \end{align*}

1.822

15030

76

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

1.822

15031

2830

\begin{align*} x_{1}^{\prime }&=2 x_{2} \\ x_{2}^{\prime }&=-2 x_{1}-x_{2} \\ \end{align*}

1.822

15032

13685

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

1.822

15033

102

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

1.823

15034

14673

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

1.823

15035

14985

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

1.823

15036

20983

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

1.823

15037

1237

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

1.824

15038

677

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

1.825

15039

1118

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

1.825

15040

2300

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

1.825

15041

5753

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

1.825

15042

18543

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

1.825

15043

21267

\begin{align*} t x^{\prime \prime }&=x \\ \end{align*}
Series expansion around \(t=0\).

1.825

15044

2301

\begin{align*} y+y^{\prime }&={\mathrm e}^{t} t \\ \end{align*}

1.828

15045

23748

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

1.828

15046

12498

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

1.829

15047

14281

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

1.829

15048

15023

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

1.829

15049

15241

\begin{align*} y^{\prime \prime }+4 \pi ^{2} y&=3 \delta \left (t -\frac {1}{3}\right )-\delta \left (t -1\right ) \\ y \left (0\right ) &= 0 \\ y^{\prime }\left (0\right ) &= 0 \\ \end{align*}
Using Laplace transform method.

1.829

15050

17521

\begin{align*} y^{\prime \prime }+4 y&=\sec \left (2 t \right )^{2} \\ y \left (0\right ) &= 0 \\ y^{\prime }\left (0\right ) &= 1 \\ \end{align*}

1.829

15051

20096

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

1.830

15052

21794

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

1.830

15053

11564

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

1.831

15054

14720

\begin{align*} x^{2} y^{\prime \prime }-2 y&=4 x -8 \\ y \left (1\right ) &= 4 \\ y^{\prime }\left (1\right ) &= -1 \\ \end{align*}

1.831

15055

23249

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

1.831

15056

23727

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

1.831

15057

14675

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

1.832

15058

20408

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

1.832

15059

15813

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

1.833

15060

25836

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

1.833

15061

21775

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

1.834

15062

2302

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

1.835

15063

2310

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

1.835

15064

14283

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

1.836

15065

18056

\begin{align*} y^{2} y^{\prime } x -y^{3}&=\frac {x^{4}}{3} \\ \end{align*}

1.836

15066

9647

\begin{align*} y^{\prime \prime }-2 y^{\prime }&=1+\delta \left (-2+t \right ) \\ y \left (0\right ) &= 0 \\ y^{\prime }\left (0\right ) &= 1 \\ \end{align*}
Using Laplace transform method.

1.837

15067

15235

\begin{align*} y^{\prime \prime }+4 y^{\prime }+3 y&=\operatorname {Heaviside}\left (t \right )-\operatorname {Heaviside}\left (t -1\right )+\operatorname {Heaviside}\left (-2+t \right )-\operatorname {Heaviside}\left (t -3\right ) \\ y \left (0\right ) &= -{\frac {2}{3}} \\ y^{\prime }\left (0\right ) &= 1 \\ \end{align*}
Using Laplace transform method.

1.837

15068

25406

\begin{align*} y^{\prime }&=3 y+{\mathrm e}^{3 t} \\ \end{align*}

1.837

15069

718

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

1.838

15070

7662

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

1.838

15071

12489

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

1.838

15072

13013

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

1.838

15073

20710

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

1.838

15074

2746

\begin{align*} x_{1}^{\prime }&=2 x_{2} \\ x_{2}^{\prime }&=-2 x_{1} \\ x_{3}^{\prime }&=-3 x_{4} \\ x_{4}^{\prime }&=3 x_{3} \\ \end{align*}
With initial conditions
\begin{align*} x_{1} \left (0\right ) &= 1 \\ x_{2} \left (0\right ) &= 1 \\ x_{3} \left (0\right ) &= 1 \\ x_{4} \left (0\right ) &= 0 \\ \end{align*}

1.839

15075

12983

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

1.839

15076

13255

\begin{align*} x^{2} y^{\prime }&=a \,x^{2} y^{2}+b x y+c \,x^{2 n}+s \,x^{n} \\ \end{align*}

1.839

15077

13703

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

1.839

15078

13749

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

1.839

15079

15401

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

1.839

15080

15843

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

1.839

15081

23620

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

1.839

15082

5603

\begin{align*} 4 y^{3} {y^{\prime }}^{2}-4 y^{\prime } x +y&=0 \\ \end{align*}

1.842

15083

14048

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

1.842

15084

21091

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

1.842

15085

21766

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

1.842

15086

25033

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

1.842

15087

13789

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

1.843

15088

1127

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

1.844

15089

15787

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

1.844

15090

4743

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

1.845

15091

13787

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

1.845

15092

8547

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

1.847

15093

22590

\begin{align*} u^{\prime \prime }+\frac {u^{\prime }}{r}&=4-4 r \\ u \left (1\right ) &= 15 \\ u^{\prime }\left (1\right ) &= 0 \\ \end{align*}

1.847

15094

11763

\begin{align*} 9 y {y^{\prime }}^{2}+4 x^{3} y^{\prime }-4 x^{2} y&=0 \\ \end{align*}

1.848

15095

15373

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

1.848

15096

6519

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

1.849

15097

11698

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

1.849

15098

22714

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

1.849

15099

15896

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

1.850

15100

20630

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

1.850