2.3.191 Problems 19001 to 19100

Table 2.913: Main lookup table. Sorted by time used to solve.

#

ID

ODE

Solved?

Maple

Mma

Sympy

time(sec)

19001

1571

\begin{align*} \left (2+x \right ) y^{\prime }+4 y&=\frac {2 x^{2}+1}{x \left (2+x \right )^{3}} \\ y \left (-1\right ) &= 2 \\ \end{align*}

2.535

19002

3576

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

2.535

19003

4231

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

2.535

19004

2510

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

2.537

19005

20428

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

2.537

19006

23148

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

2.537

19007

6048

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

2.538

19008

4657

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

2.539

19009

4785

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

2.539

19010

9519

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

2.539

19011

15449

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

2.539

19012

11362

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

2.540

19013

22455

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

2.540

19014

5857

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

2.541

19015

15386

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

2.541

19016

15873

\begin{align*} w^{\prime }&=w \cos \left (w\right ) \\ w \left (0\right ) &= 0 \\ \end{align*}

2.541

19017

18615

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

2.541

19018

15872

\begin{align*} w^{\prime }&=w \cos \left (w\right ) \\ \end{align*}

2.542

19019

22051

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

2.542

19020

21431

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

2.543

19021

5051

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

2.544

19022

6046

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

2.544

19023

18849

\begin{align*} y^{\prime \prime }+2 y^{\prime }+5 y&=\left \{\begin {array}{cc} 1 & 0\le t \le \frac {\pi }{2} \\ 0 & \frac {\pi }{2}<t \end {array}\right . \\ y \left (0\right ) &= 0 \\ y^{\prime }\left (0\right ) &= 0 \\ \end{align*}

2.544

19024

21038

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

2.545

19025

19150

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

2.546

19026

20671

\begin{align*} y^{\prime \prime }+\left (1-\frac {1}{x}\right ) y^{\prime }+4 x^{2} y \,{\mathrm e}^{-2 x}&=4 \left (x^{3}+x^{2}\right ) {\mathrm e}^{-3 x} \\ \end{align*}

2.546

19027

8500

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

2.547

19028

25666

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

2.547

19029

4646

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

2.549

19030

7333

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

2.549

19031

4643

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

2.550

19032

4763

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

2.550

19033

11462

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

2.550

19034

5846

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

2.551

19035

14278

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

2.551

19036

4436

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

2.552

19037

7443

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

2.552

19038

12315

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

2.552

19039

21718

\begin{align*} y^{\prime \prime }-3 y^{\prime }+2 y&=\left \{\begin {array}{cc} 0 & t <6 \\ 1 & 6\le t \end {array}\right . \\ y \left (0\right ) &= 0 \\ y^{\prime }\left (0\right ) &= 0 \\ \end{align*}
Using Laplace transform method.

2.552

19040

4428

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

2.553

19041

19703

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

2.554

19042

8234

\begin{align*} y^{\prime }&=\sqrt {y^{2}-9} \\ y \left (2\right ) &= -3 \\ \end{align*}

2.555

19043

1175

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

2.556

19044

8337

\begin{align*} m v^{\prime }&=m g -k v^{2} \\ \end{align*}

2.556

19045

10125

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

2.556

19046

10690

\begin{align*} 3 x^{2} y^{\prime \prime }-x \left (8+x \right ) y^{\prime }+6 y&=0 \\ \end{align*}

2.556

19047

18556

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

2.556

19048

6995

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

2.557

19049

24307

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

2.557

19050

7127

\begin{align*} y^{\prime \prime }&=2 k y^{3} \\ \end{align*}

2.558

19051

22568

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

2.558

19052

2822

\begin{align*} z^{\prime \prime }+\frac {z}{1+z^{2}}&=0 \\ \end{align*}

2.559

19053

11305

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

2.559

19054

25504

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

2.559

19055

9119

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

2.560

19056

7926

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

2.561

19057

5135

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

2.562

19058

8823

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

2.562

19059

10459

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

2.562

19060

17316

\begin{align*} y^{\prime }&=\frac {y \,{\mathrm e}^{-2 t}}{\ln \left (y\right )} \\ \end{align*}

2.562

19061

18522

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

2.562

19062

19014

\begin{align*} x_{1}^{\prime }&=-2 x_{1}-x_{2}+4 x_{3}+2 x_{4} \\ x_{2}^{\prime }&=-19 x_{1}-6 x_{2}+6 x_{3}+16 x_{4} \\ x_{3}^{\prime }&=-9 x_{1}-x_{2}+x_{3}+6 x_{4} \\ x_{4}^{\prime }&=-5 x_{1}-3 x_{2}+6 x_{3}+5 x_{4} \\ \end{align*}

2.562

19063

2855

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

2.563

19064

4610

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

2.563

19065

7754

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

2.563

19066

22569

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

2.563

19067

4244

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

2.564

19068

12028

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

2.564

19069

5156

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

2.565

19070

8265

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

2.566

19071

21983

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

2.566

19072

23880

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

2.566

19073

15056

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

2.567

19074

4408

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

2.568

19075

11860

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

2.568

19076

20286

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

2.568

19077

2977

\begin{align*} y+y^{3}+4 \left (x y^{2}-1\right ) y^{\prime }&=0 \\ y \left (0\right ) &= 1 \\ \end{align*}

2.569

19078

4644

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

2.569

19079

9123

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

2.569

19080

15118

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

2.569

19081

23850

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

2.569

19082

24271

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

2.569

19083

4609

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

2.570

19084

17053

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

2.570

19085

17844

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

2.570

19086

22566

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

2.570

19087

17006

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

2.571

19088

15252

\begin{align*} y^{\prime \prime \prime \prime }-5 y^{\prime \prime }+4 y&=12 \operatorname {Heaviside}\left (t \right )-12 \operatorname {Heaviside}\left (-1+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{align*}
Using Laplace transform method.

2.572

19089

20241

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

2.572

19090

7858

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

2.574

19091

12449

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

2.574

19092

1679

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

2.575

19093

7035

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

2.575

19094

19851

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

2.576

19095

1001

\begin{align*} x_{1}^{\prime }&=47 x_{1}-8 x_{2}+5 x_{3}-5 x_{4} \\ x_{2}^{\prime }&=-10 x_{1}+32 x_{2}+18 x_{3}-2 x_{4} \\ x_{3}^{\prime }&=139 x_{1}-40 x_{2}-167 x_{3}-121 x_{4} \\ x_{4}^{\prime }&=-232 x_{1}+64 x_{2}+360 x_{3}+248 x_{4} \\ \end{align*}

2.577

19096

2319

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

2.578

19097

11861

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

2.578

19098

1166

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

2.579

19099

22367

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

2.579

19100

5705

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

2.580