$\int\sqrt{-4x^2+9}dx$
$cos\beta\:\left(tan2\beta\:+1\right)$
$e^x\left(x+2\right)-2\left(e^x\left(x+1\right)\right)$
$f\left(x\right)=4x^{3}\text{find}f^{1\prime\prime}$
$3\cos2x+1$
$\int\frac{2x}{\sqrt{x+2}}dx$
$x^4-2x^2y^2+y^4$
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