$\int\csc\left(\frac{x}{4}\right)dx$

$\frac{dy}{dx}\left(ln\left(x^2+y^2\right)\right)$

$\csc^2-\cos^2\cdot\csc^2=1$

$\left(-24\right)+\left(-45\right)-\left(+80\right)-\left(-24\right)+\left(+55\right)-\left(18\right)$

$\frac{1}{4}\left(6-5t\right)+\frac{2}{3}\left(3t+9\right)$

$\left(-3.8+2.4i\right)\:-\:\left(1.3+0.5i\right)\:$

$\int\frac{\sqrt{7x^2-49}}{7x}dx$