$49^{\frac{1}{2}}$
$t^2\frac{d^2y}{dt^2}+t\frac{dy}{dt}+\left(t^2-\frac{1}{4}\right)y=0$
$x=x^2$
$\frac{d^2}{dt^2}\left(t^{11}\ln\left(t\right)\right)$
$\frac{dy}{dx}=5\left(r^2+25\right)$
$\int\:e^{4t}\sin\left(6\right)dt$
$-2\left(-12\right)\left(-3\right)$
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