$\int_0^1\left(\frac{log\:x}{x^{\frac{1}{2}}}\right)dx$

$\:\:\:\:\frac{\cos\:\left(3\theta\:\right)}{\cos\:\left(\theta\:\right)\cdot\:\cos\:\left(2\theta\:\right)}+\tan\:\left(\theta\:\right)\cdot\:\tan\:\left(2\theta\:\right)$

$12-3x\ge-6$

$y+4x+y-11y-4x+11y-2x$

$\lim_{x\to\infty}\left(\sqrt{x^2+17x}-x\right)$

$\lim_{x\to4}\left(x^2+6x+8\right)$

$\frac{x^2}{x^2}+4$