$\int_5^{x^2}\left(cosx^2\right)dx$
$\sec x+\tan x+\frac{1}{\sec x+\tan x}=2\sec x$
$\left(5x+3y-4z\right)^2$
$e^{ln\left(x\right)+5}$
$\int\:x\sqrt{x^2-7}\:dx$
$\frac{dy}{dx}=y-xye^{-2x}+sinx$
$\frac{sinxcotx}{1+sinx}$
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