$\lim_{x\to1}\sqrt{\frac{11x^2-10x-1}{x^3-1}}$

$0,\:00478\:x\:1,\:5$

$\lim_{u\to\frac{\pi}{4}}\left(sec^2u+csc^2u\right)$

$\frac{d^2}{dx^2}\left(\ln\cos\left(x\right)\right)$

$\frac{d}{dx}8x^4+4x^2-5=0$

$3^1\cdot3^5$

$\arcsin\left(x\right)=\frac{1}{sin\left(x\right)}$