| # |
ID |
ODE |
Solved? |
Maple |
Mma |
Sympy |
time(sec) |
| 14301 |
\begin{align*}
x^{2} y^{\prime \prime }+7 x y^{\prime }+25 y&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.506 |
|
| 14302 |
\begin{align*}
t \left (1-t \right ) y^{\prime \prime }+\left (\gamma -\left (\alpha +\beta +1\right ) t \right ) y^{\prime }-\alpha \beta y&=0 \\
\end{align*}
Series expansion around \(t=0\). |
✓ |
✓ |
✓ |
✗ |
1.506 |
|
| 14303 |
\begin{align*}
y^{\prime \prime }-x^{2} y-x^{4}+2&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✗ |
1.506 |
|
| 14304 |
\begin{align*}
y^{\prime \prime }+\left (a \,{\mathrm e}^{\lambda x}+b \,{\mathrm e}^{\mu x}+c \right ) y^{\prime }+\left (a \lambda \,{\mathrm e}^{\lambda x}+b \mu \,{\mathrm e}^{\mu x}\right ) y&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✗ |
1.506 |
|
| 14305 |
\begin{align*}
y^{\prime }&=x -y+1 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.507 |
|
| 14306 |
\begin{align*}
y^{\prime \prime }-\frac {2 t y^{\prime }}{t^{2}+1}+\frac {2 y}{t^{2}+1}&=t^{2}+1 \\
\end{align*} |
✓ |
✓ |
✓ |
✗ |
1.507 |
|
| 14307 |
\begin{align*}
y-\left (x +1\right ) y^{\prime }+x y^{\prime \prime }&=x^{2} {\mathrm e}^{2 x} \\
\end{align*} |
✓ |
✓ |
✓ |
✗ |
1.507 |
|
| 14308 |
\begin{align*}
x^{4} y^{\prime \prime }-\left (a +b \right ) x^{2} y^{\prime }+\left (x \left (a +b \right )+a b \right ) y&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✗ |
1.508 |
|
| 14309 |
\begin{align*}
y y^{\prime \prime }+{y^{\prime }}^{2}&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✗ |
1.508 |
|
| 14310 |
\begin{align*}
3 y+2 \cot \left (x \right ) y^{\prime }+y^{\prime \prime }&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✗ |
1.509 |
|
| 14311 |
\begin{align*}
y^{\prime \prime }+y^{\prime }-2 y&=0 \\
y \left (0\right ) &= 1 \\
y^{\prime }\left (0\right ) &= 1 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.509 |
|
| 14312 |
\begin{align*}
{y^{\prime }}^{2}+2 y y^{\prime } \cot \left (x \right )&=y^{2} \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.510 |
|
| 14313 |
\begin{align*}
y y^{\prime \prime }-{y^{\prime }}^{2}&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✗ |
1.511 |
|
| 14314 |
\begin{align*}
5 {y^{\prime \prime \prime }}^{2}-3 y^{\prime \prime } y^{\prime \prime \prime \prime }&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✗ |
1.511 |
|
| 14315 |
\begin{align*}
\left (y^{\prime }+1\right )^{2} \left (-x y^{\prime }+y\right )&=1 \\
\end{align*} |
✓ |
✓ |
✓ |
✗ |
1.511 |
|
| 14316 |
\begin{align*}
x^{\prime }&=2 x+y-2 z+2-t \\
y^{\prime }&=1-x \\
z^{\prime }&=x+y-z+1-t \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.511 |
|
| 14317 |
\begin{align*}
y^{\prime }&=y-x +1 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.512 |
|
| 14318 |
\begin{align*}
x^{\prime \prime }+\frac {x^{\prime }}{t}&=a \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.512 |
|
| 14319 |
\begin{align*}
y^{\prime \prime }+4 y^{\prime }&=-24 t -6-4 t \,{\mathrm e}^{-4 t}+{\mathrm e}^{-4 t} \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.512 |
|
| 14320 |
\begin{align*}
y^{\prime \prime }-y^{\prime }&={\mathrm e}^{x} \sin \left (x \right ) \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.512 |
|
| 14321 |
\begin{align*}
y^{\left (6\right )}-2 y^{\left (5\right )}+3 y^{\prime \prime \prime \prime }-4 y^{\prime \prime \prime }+3 y^{\prime \prime }-2 y^{\prime }+y&=\sin \left (\frac {x}{2}\right )^{2}+{\mathrm e}^{x} \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.512 |
|
| 14322 |
\begin{align*}
x^{\prime }&=t +x \\
x \left (0\right ) &= 1 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.512 |
|
| 14323 |
\begin{align*}
2 \left (1-y\right ) y y^{\prime \prime }-\left (-2 y+1\right ) {y^{\prime }}^{2}+f \left (x \right ) \left (1-y\right ) y y^{\prime }&=0 \\
\end{align*} |
✗ |
✓ |
✓ |
✗ |
1.513 |
|
| 14324 |
\begin{align*}
y^{\prime }&=\frac {1}{2 y+1} \\
y \left (0\right ) &= 1 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.513 |
|
| 14325 |
\begin{align*}
y^{\prime }&=y-y^{2} \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.513 |
|
| 14326 |
\begin{align*}
y^{\prime }+a y&=b \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.513 |
|
| 14327 |
\begin{align*}
x_{1}^{\prime }&=2 x_{1}-2 x_{2}+x_{3}+t \\
x_{2}^{\prime }&=x_{1}-4 x_{2}+x_{3} \\
x_{3}^{\prime }&=2 x_{1}+2 x_{2}-3 x_{3}+1 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.516 |
|
| 14328 |
\begin{align*}
2 y+y^{\prime }&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.516 |
|
| 14329 |
\begin{align*}
x^{2} y^{\prime \prime }+x y^{\prime }-9 y&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.516 |
|
| 14330 |
\begin{align*}
y^{\prime \prime }+\frac {a^{2}}{y}&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✗ |
1.516 |
|
| 14331 |
\begin{align*}
y^{\prime }&=\sqrt {y} \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.516 |
|
| 14332 |
\begin{align*}
x^{2} y^{\prime \prime }+\frac {7 x y^{\prime }}{2}-\frac {3 y}{2}&=0 \\
y \left (-4\right ) &= 1 \\
y^{\prime }\left (-4\right ) &= 0 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.516 |
|
| 14333 |
\begin{align*}
4 y x +2 x^{2}+y+\left (2 x^{2}+3 y^{2}\right ) y^{\prime }&=0 \\
\end{align*} |
✗ |
✗ |
✗ |
✗ |
1.516 |
|
| 14334 |
\begin{align*}
t y^{\prime }-y-2 \left (-y+t y^{\prime }\right )^{2}&=y^{\prime }+1 \\
\end{align*} |
✓ |
✓ |
✓ |
✗ |
1.517 |
|
| 14335 |
\begin{align*}
\left (t -1\right ) y^{\prime \prime }-t y^{\prime }+y&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✗ |
1.517 |
|
| 14336 |
\begin{align*}
y^{\prime \prime }-y^{\prime }&={\mathrm e}^{2 x} \cos \left ({\mathrm e}^{x}\right ) \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.517 |
|
| 14337 |
\begin{align*}
t^{2} y^{\prime \prime }-4 t y^{\prime }+6 y&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.519 |
|
| 14338 |
\begin{align*}
\left (x^{2}+4\right ) y^{\prime \prime }-2 x y^{\prime }+2 y&=8 \\
\end{align*} |
✓ |
✓ |
✓ |
✗ |
1.519 |
|
| 14339 |
\begin{align*}
2 x^{2} y^{\prime \prime }+x y^{\prime }+\left (2 x^{2}-3\right ) y&=0 \\
\end{align*}
Series expansion around \(x=0\). |
✓ |
✓ |
✓ |
✓ |
1.519 |
|
| 14340 |
\begin{align*}
{y^{\prime }}^{3}-{y^{\prime }}^{2}+x y^{\prime }-y&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✗ |
1.520 |
|
| 14341 |
\begin{align*}
4 {y^{\prime }}^{3}+4 y^{\prime }&=x \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.520 |
|
| 14342 |
\begin{align*}
2 \left (1-x \right ) y-\left (x +1\right ) y^{\prime }+x y^{\prime \prime }&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✗ |
1.520 |
|
| 14343 |
\begin{align*}
y^{\prime \prime }+\left (a \,x^{2}+b x +c \right ) y^{\prime }+x \left (a b \,x^{2}+b c +2 a \right ) y&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✗ |
1.520 |
|
| 14344 |
\begin{align*}
\left (y^{\prime }-x y^{\prime \prime }\right )^{2}&=1+{y^{\prime \prime }}^{2} \\
\end{align*} |
✓ |
✓ |
✓ |
✗ |
1.520 |
|
| 14345 |
\begin{align*}
y^{\prime }&=4 y+16 x \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.520 |
|
| 14346 |
\begin{align*}
y^{\prime }-4 y&=\delta \left (-4+t \right ) \\
y \left (0\right ) &= 2 \\
\end{align*}
Using Laplace transform method. |
✓ |
✓ |
✓ |
✓ |
1.520 |
|
| 14347 |
\begin{align*}
-\left (-4 x^{2}+4 x +1\right ) y+4 x \left (1-2 x \right ) y^{\prime }+4 x^{2} y^{\prime \prime }&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✗ |
1.522 |
|
| 14348 |
\begin{align*}
y^{\prime \prime }-4 y&=12 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.523 |
|
| 14349 |
\begin{align*}
-2 y+y^{\prime }&={\mathrm e}^{2 t} \\
y \left (0\right ) &= 2 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.524 |
|
| 14350 |
\begin{align*}
x^{2} y^{\prime \prime }-x y^{\prime }-8 y&={\mathrm e}^{x} \left (x^{2}+2\right ) \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.524 |
|
| 14351 |
\begin{align*}
{y^{\prime }}^{2} x -2 y y^{\prime }+x&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.524 |
|
| 14352 |
\begin{align*}
x^{2} y^{\prime \prime }-x y^{\prime }+y&=0 \\
y \left (1\right ) &= 7 \\
y^{\prime }\left (1\right ) &= 2 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.525 |
|
| 14353 |
\begin{align*}
y^{\prime \prime }+\left (a x +2 b \right ) y^{\prime }+\left (a b x +b^{2}-a \right ) y&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✗ |
1.525 |
|
| 14354 |
\begin{align*}
x y^{\prime \prime }+y^{\prime }&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.525 |
|
| 14355 |
\begin{align*}
y^{\prime }+y&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.526 |
|
| 14356 |
\begin{align*}
y^{\prime \prime }+y&=3 x^{2}-4 \sin \left (x \right ) \\
y \left (0\right ) &= 0 \\
y^{\prime }\left (0\right ) &= 1 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.527 |
|
| 14357 |
\begin{align*}
\left ({y^{\prime }}^{2}-y^{2}\right ) {\mathrm e}^{y^{\prime }}-{y^{\prime }}^{2} x +x y^{2}&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.527 |
|
| 14358 |
\begin{align*}
x^{2} y^{\prime \prime }+x y^{\prime }-y&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.528 |
|
| 14359 |
\begin{align*}
y^{\prime }&=y^{2}-y^{4} \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.529 |
|
| 14360 |
\begin{align*}
4 x^{2} y^{\prime \prime }+8 x y^{\prime }+y&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.529 |
|
| 14361 |
\begin{align*}
y^{\prime \prime }+y&={\mathrm e}^{-x}+\cos \left (x \right )+x^{3}+{\mathrm e}^{x} \sin \left (x \right ) \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.529 |
|
| 14362 |
\begin{align*}
y^{\prime \prime }-y&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.529 |
|
| 14363 |
\begin{align*}
y^{\prime }+3 y&=x +1 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.529 |
|
| 14364 |
\begin{align*}
y^{\prime \prime }+4 y^{\prime }&=8+34 \cos \left (x \right ) \\
y \left (0\right ) &= 3 \\
y^{\prime }\left (0\right ) &= 2 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.529 |
|
| 14365 |
\begin{align*}
y^{\prime }&=3 y^{{2}/{3}} \\
y \left (2\right ) &= 0 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.529 |
|
| 14366 |
\begin{align*}
x y^{\prime }-\left (2 x^{2}+1\right ) y&=x^{2} \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.529 |
|
| 14367 |
\begin{align*}
y^{\prime \prime }+y&=0 \\
y \left (0\right ) &= 2 \\
y \left (\frac {\pi }{2}\right ) &= 0 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.530 |
|
| 14368 |
\begin{align*}
y^{\prime }&={\mathrm e}^{-y}+1 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.530 |
|
| 14369 |
\begin{align*}
y^{\prime \prime }+\frac {2 p y^{\prime }}{x}+y&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✗ |
1.530 |
|
| 14370 |
\begin{align*}
x y^{\prime \prime }&=y^{\prime }+x^{5} \\
y \left (1\right ) &= {\frac {1}{2}} \\
y^{\prime }\left (1\right ) &= 1 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.530 |
|
| 14371 |
\begin{align*}
x \left (x -2\right ) y^{\prime \prime }+2 \left (x -1\right ) y^{\prime }-2 y&=0 \\
\end{align*}
Series expansion around \(x=2\). |
✓ |
✓ |
✓ |
✓ |
1.531 |
|
| 14372 |
\begin{align*}
4 x^{2} y^{\prime \prime }+2 x^{2} y^{\prime }-\left (x +3\right ) y&=0 \\
\end{align*}
Series expansion around \(x=0\). |
✓ |
✓ |
✓ |
✓ |
1.531 |
|
| 14373 |
\begin{align*}
2 y^{\prime \prime }+y^{\prime }&=8 \sin \left (2 x \right )+{\mathrm e}^{-x} \\
y \left (0\right ) &= 1 \\
y^{\prime }\left (0\right ) &= 0 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.532 |
|
| 14374 |
\begin{align*}
t y^{\prime \prime }-\left (t +1\right ) y^{\prime }+y&={\mathrm e}^{2 t} t^{2} \\
\end{align*} |
✓ |
✓ |
✓ |
✗ |
1.533 |
|
| 14375 |
\begin{align*}
x^{2} y^{\prime \prime }+2 x \left (x -2\right ) y^{\prime }+2 \left (2-3 x \right ) y&=0 \\
\end{align*}
Series expansion around \(x=0\). |
✓ |
✓ |
✓ |
✓ |
1.533 |
|
| 14376 |
\begin{align*}
\left (-x^{2}+1\right ) y^{\prime \prime }-x y^{\prime }&=2 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.533 |
|
| 14377 |
\begin{align*}
x y^{\prime \prime }+y^{\prime }&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.533 |
|
| 14378 |
\begin{align*}
x^{\prime }&=x+y \\
y^{\prime }&=x-y \\
z^{\prime }&=2 y \\
\end{align*}
With initial conditions \begin{align*}
x \left (0\right ) &= 2 \\
y \left (0\right ) &= 0 \\
z \left (0\right ) &= 0 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.533 |
|
| 14379 |
\begin{align*}
y^{\prime \prime }+y^{\prime }&=4 x^{3}-2 \,{\mathrm e}^{2 x} \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.533 |
|
| 14380 |
\begin{align*}
x^{2} y^{\prime \prime }+x \left (x -\frac {1}{2}\right ) y^{\prime }+\frac {y}{2}&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.534 |
|
| 14381 |
\begin{align*}
t^{2} y^{\prime \prime }-4 t y^{\prime }+\left (t^{2}+6\right ) y&=t^{3}+2 t \\
y \left (0\right ) &= 0 \\
y^{\prime }\left (0\right ) &= 1 \\
\end{align*} |
✓ |
✓ |
✗ |
✗ |
1.534 |
|
| 14382 |
\begin{align*}
y^{\prime }&=y^{2}-6 y-16 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.534 |
|
| 14383 |
\begin{align*}
x^{2} y^{\prime \prime }+x y^{\prime }+\left (x +12\right ) y&=x^{2}+x \\
\end{align*}
Series expansion around \(x=0\). |
✓ |
✓ |
✓ |
✗ |
1.536 |
|
| 14384 |
\begin{align*}
y^{\prime \prime }&=a x +b y \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.536 |
|
| 14385 |
\begin{align*}
x \left (x +1\right ) y^{\prime \prime }+\left (1+5 x \right ) y^{\prime }+3 y&=0 \\
\end{align*}
Series expansion around \(x=0\). |
✓ |
✓ |
✓ |
✓ |
1.536 |
|
| 14386 |
\begin{align*}
y^{\prime \prime }+a y^{\prime }+f \left (x \right ) \sin \left (y\right )&=0 \\
\end{align*} |
✗ |
✗ |
✗ |
✗ |
1.536 |
|
| 14387 |
\begin{align*}
z^{\prime }+4 i z&={\mathrm e}^{8 i t} \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.536 |
|
| 14388 |
\begin{align*}
y^{\prime \prime }+4 y^{\prime }&=x +{\mathrm e}^{-4 x} \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.537 |
|
| 14389 |
\begin{align*}
y^{\prime \prime \prime }+y&=\sec \left (x \right ) \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.537 |
|
| 14390 |
\begin{align*}
y^{\prime }-y&=2 \,{\mathrm e}^{x} \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.537 |
|
| 14391 |
\begin{align*}
-2 y x -2 \left (-x^{2}+1\right ) y^{\prime }+x \left (x^{2}+1\right ) y^{\prime \prime }&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✗ |
1.539 |
|
| 14392 |
\begin{align*}
4 y^{3} {y^{\prime }}^{2}-4 x y^{\prime }+y&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✗ |
1.539 |
|
| 14393 |
\begin{align*}
y^{\prime }&=2 y-t \\
y \left (0\right ) &= {\frac {1}{2}} \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.539 |
|
| 14394 |
\begin{align*}
9 x \left (1-x \right ) y^{\prime \prime }-12 y^{\prime }+4 y&=0 \\
\end{align*}
Series expansion around \(x=0\). |
✓ |
✓ |
✓ |
✓ |
1.539 |
|
| 14395 |
\begin{align*}
y^{\prime \prime }+3 y^{\prime }+2 y&={\mathrm e}^{t} \left (t^{2}+1\right ) \sin \left (2 t \right )+3 \,{\mathrm e}^{-t} \cos \left (t \right )+4 \,{\mathrm e}^{t} \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.539 |
|
| 14396 |
\begin{align*}
2 x y^{\prime \prime } y^{\prime \prime \prime }&=-a^{2}+{y^{\prime \prime }}^{2} \\
\end{align*} |
✓ |
✓ |
✓ |
✗ |
1.539 |
|
| 14397 |
\begin{align*}
y^{\prime \prime }+2 y&=4 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.540 |
|
| 14398 |
\begin{align*}
-\left (a^{2}+1\right ) y-2 \tan \left (x \right ) y^{\prime }+y^{\prime \prime }&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✗ |
1.540 |
|
| 14399 |
\begin{align*}
x^{2} y^{\prime \prime }+\left (\frac {5}{3} x +x^{2}\right ) y^{\prime }-\frac {y}{3}&=0 \\
\end{align*}
Series expansion around \(x=0\). |
✓ |
✓ |
✓ |
✓ |
1.540 |
|
| 14400 |
\begin{align*}
y^{\prime }-3 y&=6 \\
y \left (0\right ) &= 5 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.540 |
|