$\lim_{x\to2}\left(\frac{\left(x-2\right)^2sin\left(x\right)}{\left|x-2\right|}\right)$
$\lim_{x,y\to1,\frac{\pi}{6}}\left(\frac{x\:seny}{x^2+1}\right)$
$sin\left(\frac{1}{4}x\right)=0$
$\frac{2x}{x-5}-\frac{x+2}{x-1}$
$\cos2y-\sin2y\cdot\csc\left(y\right)=2\cos^2\left(\frac{y}{2}\right)$
$\lim_{x\to\infty}\left(\frac{\sqrt{log\left(x\right)}}{\left(log\left(\sqrt{x}\right)\right)^2}\right)$
$cscx-sin=\frac{1}{secxtanx}$
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