$$\frac{dy}{dx}xtany$$

$$2\left(-4\right)^4+7\left(-4\right)^3-4\left(-4\right)^2-4-1$$

$$\lim_{x\to1}\left(x-m\right)$$

$$\int\left(7\sec^2\left(v\right)\right)dv$$

$$\left(5x^4+6y^2\right)\cdot\left(25x^8-30x^4y^2+36y^4\right)$$

$$x=cosy$$

$$\ln\left(x\right)=10$$