$\int\ln\left(\ln\left(4x\right)\right)dx$

$\frac{1}{x^2yseny-xyseny}dx+\frac{1}{2x-1}dy=0\:,\:con\:\:y\left(2\right)=0$

$\frac{8m^3-7}{2m-7}$

$\cot^2\left(x\right)+\cot^4\left(a\right)=\csc^4\left(x\right)-\csc^2\left(x\right)$

$\frac{dy}{dx}=\frac{1}{\cos\left(3y\right)}$

$x^2+8x+5$

$2-4+5+3-1$