$\frac{\cos\left(\infty\right)+\tan\left(\infty\right)}{\cos\left(\infty\right)\cdot\tan\left(\infty\right)}=\cot\left(\infty\right)+\sec\left(\infty\right)$

$\int\left(x^4\right)e^{\frac{x}{a}}dx$

$\frac{d}{dx}\sqrt[3]{cosx}$

$5x+10>30$

$\frac{d}{dx}e$

$2\cdot\sec\left(x\right)\cdot\cos\left(x\right)=\sin\left(x\right)$

$\frac{\csc\left(x\right)-\cot\left(x\right)}{\cot\left(x\right)+\tan\left(x\right)}$