| # |
ID |
ODE |
Solved? |
Maple |
Mma |
Sympy |
time(sec) |
| 14301 |
\begin{align*}
y^{\prime }-2 y&=-10 \\
y \left (0\right ) &= 8 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.515 |
|
| 14302 |
\begin{align*}
y^{\prime }+y^{2}-1&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.516 |
|
| 14303 |
\begin{align*}
y^{\prime }&={\mathrm e}^{x}+y \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.516 |
|
| 14304 |
\begin{align*}
y^{\left (5\right )}-\frac {y^{\prime \prime \prime \prime }}{x}&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.516 |
|
| 14305 |
\begin{align*}
x^{2} y^{\prime \prime }+y^{\prime } x -16 y&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.518 |
|
| 14306 |
\begin{align*}
y^{\prime }&=x^{2}+{\mathrm e}^{x}-\sin \left (x \right ) \\
y \left (2\right ) &= -1 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.518 |
|
| 14307 |
\begin{align*}
y^{\prime }&=y^{2}-2 y \\
y \left (0\right ) &= 1 \\
\end{align*} |
✓ |
✓ |
✗ |
✓ |
1.518 |
|
| 14308 |
\begin{align*}
\ln \left (y\right )+\frac {y^{\prime }}{y}&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.518 |
|
| 14309 |
\begin{align*}
y^{\prime \prime }+{y^{\prime }}^{2}+y^{\prime }&=0 \\
y \left (0\right ) &= 0 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.519 |
|
| 14310 |
\begin{align*}
9 y+6 y^{\prime }+y^{\prime \prime }&=10 \sin \left (x \right ) \\
y \left (0\right ) &= 0 \\
y^{\prime }\left (0\right ) &= 0 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.520 |
|
| 14311 |
\begin{align*}
y^{\prime \prime }+y&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.520 |
|
| 14312 |
\begin{align*}
\left (-x^{2}+1\right ) y^{\prime \prime }-2 y^{\prime } x +\frac {a^{2} y}{-x^{2}+1}&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✗ |
1.520 |
|
| 14313 |
\begin{align*}
{y^{\prime }}^{3}-2 y^{\prime } x +y&=0 \\
\end{align*} |
✓ |
✓ |
✗ |
✗ |
1.520 |
|
| 14314 |
\begin{align*}
y^{\prime \prime }-4 y^{\prime }-5 y&=0 \\
y \left (-1\right ) &= 3 \\
y^{\prime }\left (-1\right ) &= 9 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.521 |
|
| 14315 |
\begin{align*}
4 t^{2} y^{\prime \prime }+4 y^{\prime } t +\left (16 t^{2}-1\right ) y&=16 t^{{3}/{2}} \\
y \left (\pi \right ) &= 0 \\
y^{\prime }\left (2 \pi \right ) &= 0 \\
\end{align*} |
✓ |
✓ |
✓ |
✗ |
1.521 |
|
| 14316 |
\begin{align*}
1+y+x^{2} y+\left (x^{3}+x \right ) y^{\prime }&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.521 |
|
| 14317 |
\begin{align*}
y^{\prime }+9 y&=90 \\
y \left (0\right ) &= 1 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.521 |
|
| 14318 |
\begin{align*}
y^{\prime \prime }+\lambda y&=0 \\
y \left (0\right ) &= 0 \\
y^{\prime }\left (\pi \right ) &= 0 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.522 |
|
| 14319 |
\begin{align*}
t^{2} y^{\prime \prime }-4 y^{\prime } t +6 y&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.523 |
|
| 14320 |
\begin{align*}
y^{\prime \prime }+2 y^{\prime }+y&=2 \sin \left (t \right ) \operatorname {Heaviside}\left (t -\pi \right ) \\
y \left (0\right ) &= 1 \\
y^{\prime }\left (0\right ) &= 0 \\
\end{align*} Using Laplace transform method. |
✓ |
✓ |
✓ |
✓ |
1.523 |
|
| 14321 |
\begin{align*}
4 y+y^{\prime \prime }&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.523 |
|
| 14322 |
\begin{align*}
y^{\prime \prime }-4 y^{\prime }&=10 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.524 |
|
| 14323 |
\begin{align*}
\left (-a^{2}+x^{2}\right ) y^{\prime \prime }+2 b x y^{\prime }+b \left (b -1\right ) y&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✗ |
1.524 |
|
| 14324 |
\begin{align*}
y^{\prime }&=\sqrt {x -y} \\
y \left (2\right ) &= 1 \\
\end{align*} |
✓ |
✓ |
✓ |
✗ |
1.526 |
|
| 14325 |
\begin{align*}
x \left (x +1\right ) y^{\prime \prime }+2 y^{\prime }+3 y x&=0 \\
\end{align*} Series expansion around \(x=0\). |
✓ |
✓ |
✓ |
✓ |
1.526 |
|
| 14326 |
\begin{align*}
y^{2}-\frac {y}{2 \sqrt {t}}+\left (2 t y-\sqrt {t}+1\right ) y^{\prime }&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✗ |
1.526 |
|
| 14327 |
\begin{align*}
y^{\prime \prime }+a^{2} y&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.526 |
|
| 14328 |
\begin{align*}
y^{\prime }-y&=x \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.526 |
|
| 14329 |
\begin{align*}
2 x^{2}+y x -2 y^{2}-\left (x^{2}-4 y x \right ) y^{\prime }&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.527 |
|
| 14330 |
\begin{align*}
y^{\prime \prime }-4 y^{\prime }+13 y&=\delta \left (t -\frac {\pi }{4}\right ) \\
y \left (0\right ) &= 3 \\
y^{\prime }\left (0\right ) &= 0 \\
\end{align*} Using Laplace transform method. |
✓ |
✓ |
✓ |
✓ |
1.528 |
|
| 14331 |
\begin{align*}
y^{\prime \prime }+a^{2} y&=f \left (x \right ) \\
y \left (0\right ) &= 0 \\
y^{\prime }\left (0\right ) &= 0 \\
\end{align*} Using Laplace transform method. |
✓ |
✓ |
✓ |
✓ |
1.528 |
|
| 14332 |
\begin{align*}
y^{\prime \prime }&=\sqrt {1+{y^{\prime }}^{2}} \\
\end{align*} |
✓ |
✓ |
✓ |
✗ |
1.528 |
|
| 14333 |
\begin{align*}
x^{2} y^{\prime \prime }+5 y^{\prime } x +4 y&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.529 |
|
| 14334 |
\begin{align*}
3 y^{2} y^{\prime }+y^{3}&={\mathrm e}^{-x} \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.530 |
|
| 14335 |
\begin{align*}
y^{\prime }&=-y-\sin \left (x \right ) \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.531 |
|
| 14336 |
\begin{align*}
y^{\prime }&=\ln \left (1+x^{2}+y^{2}\right ) \\
\end{align*} |
✗ |
✗ |
✗ |
✗ |
1.531 |
|
| 14337 |
\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 \(t=0\). |
✓ |
✓ |
✓ |
✗ |
1.532 |
|
| 14338 |
\begin{align*}
y^{\prime \prime }+\frac {\left ({\mathrm e}^{x}+1\right ) y}{1-{\mathrm e}^{x}}&=0 \\
\end{align*} Series expansion around \(x=3\). |
✓ |
✓ |
✓ |
✓ |
1.532 |
|
| 14339 |
\begin{align*}
y^{\prime \prime }+\frac {y^{\prime }}{x}+\left (1-\frac {1}{4 x^{2}}\right ) y&=\sqrt {x} \\
\end{align*} |
✓ |
✓ |
✓ |
✗ |
1.532 |
|
| 14340 |
\begin{align*}
x^{2} y^{\prime \prime }+5 y^{\prime } x +3 y&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.533 |
|
| 14341 |
\begin{align*}
{y^{\prime }}^{2}+y^{\prime } x +1&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.533 |
|
| 14342 |
\begin{align*}
y^{\prime \prime } x +\left (a \,x^{n}+b \right ) y^{\prime }+x^{n -1} a n y&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✗ |
1.533 |
|
| 14343 |
\begin{align*}
y&=\ln \left (\cos \left (y^{\prime }\right )\right )+y^{\prime } \tan \left (y^{\prime }\right ) \\
\end{align*} |
✓ |
✓ |
✓ |
✗ |
1.534 |
|
| 14344 |
\begin{align*}
x_{1}^{\prime }&=x_{2}-x_{3}+x_{4} \\
x_{2}^{\prime }&=-x_{2}+x_{4} \\
x_{3}^{\prime }&=x_{3}-x_{4} \\
x_{4}^{\prime }&=2 x_{4} \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.534 |
|
| 14345 |
\begin{align*}
\frac {2 x}{y}-\frac {3 y^{2}}{x^{4}}+\left (\frac {2 y}{x^{3}}-\frac {x^{2}}{y^{2}}+\frac {1}{\sqrt {y}}\right ) y^{\prime }&=0 \\
\end{align*} |
✓ |
✓ |
✗ |
✗ |
1.535 |
|
| 14346 |
\begin{align*}
y^{\prime \prime }+2 y^{\prime }+2 y&=\cos \left (t \right )+\delta \left (t -\frac {\pi }{2}\right ) \\
y \left (0\right ) &= 0 \\
y^{\prime }\left (0\right ) &= 0 \\
\end{align*} Using Laplace transform method. |
✓ |
✓ |
✓ |
✓ |
1.536 |
|
| 14347 |
\begin{align*}
y^{\prime \prime }+3 y^{\prime }+2 y&=f \left (t \right ) \\
y \left (0\right ) &= 0 \\
y^{\prime }\left (0\right ) &= 0 \\
\end{align*} Using Laplace transform method. |
✓ |
✓ |
✓ |
✓ |
1.536 |
|
| 14348 |
\begin{align*}
y^{\prime \prime }+y y^{\prime }&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✗ |
1.536 |
|
| 14349 |
\begin{align*}
y^{\prime \prime }+y&=\operatorname {Heaviside}\left (t -\frac {\pi }{2}\right )+3 \delta \left (t -\frac {3 \pi }{2}\right )-\operatorname {Heaviside}\left (t -2 \pi \right ) \\
y \left (0\right ) &= 0 \\
y^{\prime }\left (0\right ) &= 0 \\
\end{align*} Using Laplace transform method. |
✓ |
✓ |
✓ |
✓ |
1.537 |
|
| 14350 |
\begin{align*}
y^{\prime }&=\ln \left (y\right ) x \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.539 |
|
| 14351 |
\begin{align*}
y^{\prime \prime }+\omega _{n}^{2} y&={\mathrm e}^{i \omega t} \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.539 |
|
| 14352 |
\begin{align*}
2 y+y^{\prime }&={\mathrm e}^{x} \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.539 |
|
| 14353 |
\begin{align*}
3 y+y^{\prime }&=\left \{\begin {array}{cc} 1 & 0\le t <1 \\ 0 & 1\le t \end {array}\right . \\
y \left (0\right ) &= 1 \\
\end{align*} Using Laplace transform method. |
✓ |
✓ |
✓ |
✗ |
1.540 |
|
| 14354 |
\begin{align*}
x^{\prime }&=\frac {{\mathrm e}^{-t}}{\sqrt {t}} \\
x \left (1\right ) &= 0 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.540 |
|
| 14355 |
\begin{align*}
y^{\prime \prime }-\left (a \,{\mathrm e}^{2 \lambda x}+b \,{\mathrm e}^{\lambda x}+c \right ) y&=0 \\
\end{align*} |
✗ |
✓ |
✓ |
✗ |
1.541 |
|
| 14356 |
\begin{align*}
x \left (x +1\right ) y^{\prime \prime }+\left (2+x \right ) y^{\prime }-y&=x +\frac {1}{x} \\
\end{align*} |
✓ |
✓ |
✓ |
✗ |
1.542 |
|
| 14357 |
\begin{align*}
y^{\prime \prime }+y&=0 \\
y \left (0\right ) &= 1 \\
y \left (\frac {\pi }{2}\right ) &= 2 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.542 |
|
| 14358 |
\begin{align*}
x^{\prime }&=x-y-z \\
y^{\prime }&=x+3 y+z \\
z^{\prime }&=-3 x-6 y+6 z \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.542 |
|
| 14359 |
\begin{align*}
4 y+y^{\prime \prime }&=24 \,{\mathrm e}^{2 x} \\
y \left (0\right ) &= -2 \\
y^{\prime }\left (0\right ) &= 2 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.542 |
|
| 14360 |
\begin{align*}
y^{\prime }&=x^{2}-y-2 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.543 |
|
| 14361 |
\begin{align*}
\left (-2+t \right )^{2} y^{\prime \prime }+5 \left (-2+t \right ) y^{\prime }+4 y&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✗ |
1.543 |
|
| 14362 |
\begin{align*}
y^{3} y^{\prime \prime }+4&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✗ |
1.543 |
|
| 14363 |
\begin{align*}
2 x y^{\prime \prime } y^{\prime \prime \prime }&=-a^{2}+{y^{\prime \prime }}^{2} \\
\end{align*} |
✓ |
✓ |
✓ |
✗ |
1.543 |
|
| 14364 |
\begin{align*}
2 t^{2} y^{\prime \prime }+3 y^{\prime } t -y&=0 \\
y \left (1\right ) &= 2 \\
y^{\prime }\left (1\right ) &= 1 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.544 |
|
| 14365 |
\begin{align*}
b x y+a y^{\prime }+y^{\prime \prime } x&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✗ |
1.545 |
|
| 14366 |
\begin{align*}
a \,x^{2} y^{\prime \prime }+b x y^{\prime }+c y&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.545 |
|
| 14367 |
\begin{align*}
y^{\prime }+2 y x&=x \\
y \left (0\right ) &= -2 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.546 |
|
| 14368 |
\begin{align*}
t^{2} y^{\prime \prime }+5 y^{\prime } t +13 y&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.546 |
|
| 14369 |
\begin{align*}
x^{2}-3 y y^{\prime }+x {y^{\prime }}^{2}&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✗ |
1.546 |
|
| 14370 |
\begin{align*}
y^{\prime }&=k y \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.546 |
|
| 14371 |
\begin{align*}
2 x^{2} y^{\prime \prime }-y^{\prime } x +y&=x^{2} \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.547 |
|
| 14372 |
\begin{align*}
\cos \left (y^{\prime }\right )&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.547 |
|
| 14373 |
\begin{align*}
y^{\prime }&=-2 y+8 \\
y \left (0\right ) &= 6 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.547 |
|
| 14374 |
\begin{align*}
x^{2} y^{\prime \prime }+y^{\prime } x +\frac {\left (-9 a^{2}+4 x^{2}\right ) y}{4 a^{2}}&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.548 |
|
| 14375 |
\begin{align*}
x^{\prime \prime }+4 x&=289 t \,{\mathrm e}^{t} \sin \left (2 t \right ) \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.548 |
|
| 14376 |
\begin{align*}
2 y^{\prime \prime } x -5 y^{\prime }-3 y&=0 \\
\end{align*} Series expansion around \(x=0\). |
✓ |
✓ |
✓ |
✓ |
1.548 |
|
| 14377 |
\begin{align*}
x^{2} y^{\prime \prime }+2 y^{\prime } x -6 y&=0 \\
y \left (\frac {1}{2}\right ) &= 2 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.548 |
|
| 14378 |
\begin{align*}
y+\left (3 x +2\right ) y^{\prime }+x \left (x +1\right ) y^{\prime \prime }&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✗ |
1.549 |
|
| 14379 |
\begin{align*}
\left (x -a \right )^{2} \left (-b +x \right )^{2} y^{\prime \prime }-c y&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✗ |
1.549 |
|
| 14380 |
\begin{align*}
t^{2} y^{\prime \prime }+y^{\prime } t +y&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.550 |
|
| 14381 |
\begin{align*}
y^{\prime }-2 y&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.550 |
|
| 14382 |
\begin{align*}
y^{\prime \prime }+25 y&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.551 |
|
| 14383 |
\begin{align*}
y \left (1+\sqrt {x^{2} y^{4}-1}\right )+2 y^{\prime } x&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.551 |
|
| 14384 |
\begin{align*}
x^{4} {y^{\prime }}^{2}-y^{\prime } x -y&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.551 |
|
| 14385 |
\begin{align*}
x^{2}-a y&=\left (a x -y^{2}\right ) y^{\prime } \\
\end{align*} |
✓ |
✓ |
✓ |
✗ |
1.551 |
|
| 14386 |
\begin{align*}
x^{2} y^{\prime \prime }+y^{\prime } x +\left (x^{2}-\frac {1}{9}\right ) y&=0 \\
\end{align*} Series expansion around \(x=1\). |
✓ |
✓ |
✓ |
✓ |
1.551 |
|
| 14387 |
\begin{align*}
x^{\prime \prime }+9 x&=10 \cos \left (2 t \right ) \\
x \left (0\right ) &= 0 \\
x^{\prime }\left (0\right ) &= 0 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.552 |
|
| 14388 |
\begin{align*}
y^{\prime }&=2 x -3 y \\
y \left (0\right ) &= {\frac {1}{3}} \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.552 |
|
| 14389 |
\begin{align*}
y^{\prime }+f \left (x \right ) y-g \left (x \right )&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.552 |
|
| 14390 |
\begin{align*}
y^{\prime \prime }+\frac {x y^{\prime }}{1-x}-\frac {y}{1-x}&=x -1 \\
\end{align*} |
✓ |
✓ |
✓ |
✗ |
1.552 |
|
| 14391 |
\begin{align*}
x^{\prime }&=\lambda x-x^{5} \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.552 |
|
| 14392 |
\begin{align*}
y+2 y^{\prime }+y^{\prime \prime }&=2 x^{2} {\mathrm e}^{-2 x}+3 \,{\mathrm e}^{2 x} \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.552 |
|
| 14393 |
\begin{align*}
t^{2} y^{\prime \prime }+y^{\prime } t -4 y&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.552 |
|
| 14394 |
\begin{align*}
{y^{\prime }}^{3}-a x y y^{\prime }+2 a y^{2}&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✗ |
1.553 |
|
| 14395 |
\begin{align*}
x^{2} y^{\prime }+2 y x&={\mathrm e}^{x} \\
y \left (1\right ) &= 1 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.553 |
|
| 14396 |
\begin{align*}
y^{\prime \prime }+6 y^{\prime }+8 y&=\cos \left (t \right ) \\
y \left (0\right ) &= 0 \\
y^{\prime }\left (0\right ) &= 0 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.555 |
|
| 14397 |
\begin{align*}
{y^{\prime }}^{2}+\left (a x +b y\right ) y^{\prime }+a b x y&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.556 |
|
| 14398 |
\begin{align*}
y^{\prime \prime }+4 y&=\left \{\begin {array}{cc} 1 & 0\le t <1 \\ 0 & 1\le t \end {array}\right . \\
y \left (0\right ) &= 0 \\
y^{\prime }\left (0\right ) &= -1 \\
\end{align*} Using Laplace transform method. |
✓ |
✓ |
✓ |
✓ |
1.556 |
|
| 14399 |
\begin{align*}
{y^{\prime }}^{2}&=x \\
\end{align*} |
✓ |
✓ |
✓ |
✓ |
1.556 |
|
| 14400 |
\begin{align*}
x y y^{\prime \prime }+x {y^{\prime }}^{2}-y y^{\prime }&=0 \\
\end{align*} |
✓ |
✓ |
✓ |
✗ |
1.556 |
|