$\frac{d^2y}{dx^2}=\left(x^2+9\right)^{-2}$
$\int\cot\left(-3x-2\right)dx$
$y3\:+\:343$
$\frac{1}{8}x-\frac{3}{6}x+\frac{5}{8}x$
$-14-1-1$
$\int\left(\frac{5-e^{-4x}}{e^{5x}}\right)dx$
$4^4-2x^3-21x^2+22x+40$
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