$\lim_{x\to\infty}\left(\sqrt{4x^2+35}-2x\right)$
$\int\:\:x^3e^{-2x}dx$
$2x+2<3x-1$
$\left(\frac{1}{n-1}\right)^2$
$\sec\cdot\tan^2x\cdot\cos x+1$
$3<4x+2$
$\int\frac{1}{2}\left(a-y\right)dx$
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