$24:6+8:2-15:3+4-2:-1$

$3\cos\left(y\right)+\cot\left(y\right)=0$

$\int-\frac{4}{5}\left(10x-4\right)^4dx$

$\ln\left(\frac{\sqrt{1+x^2}-1}{\sqrt{1+x^2}+1}\right)$

$\lim_{x\to\pi}\left(\frac{x^2-\pi^2}{\frac{1}{tan\left(\frac{x}{2}\right)}}\right)$

$\lim_{x\to7}\left(\frac{3-\sqrt{x}}{x-7}\right)$

$\lim_{x\to\frac{\pi}{2}}\left(1-\sin\left(x\right)\right)^{\tan\left(x\right)}$