$\frac{1}{sec\left(x\right)-1}+\frac{1}{sec\left(x\right)+1}=2\csc\left(x\right)\cot\left(x\right)$

$\int3x^5\cdot\ln\left(x\right)$

$\int\left(x\:e^{54x}\right)dx$

$cota\:csc^2a\:$

$115\:+\:798\:+\:41\:+\:6\:$

$\frac{1}{-1}$

$\left(1+\cos^2\left(x\right)\right)\cdot\tan^2\left(x\right)-\frac{1}{\cos^2\left(x\right)}$