$cot\left(\frac{\pi\:}{2}-x\right)cscx=secx$
$\lim_{x\to1}\left(\frac{1-x+\ln\left(0\right)}{1-cos\left(8\pi x\right)}\right)$
$\frac{144}{16}$
$\frac{x^{2}+4x}{4x^{3}-64x}$
$4m+2m-4$
$x^3+3x^2+3x+2$
$\sec\left(a\right)=2.3344$
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