$$11x\ge\:27$$

$$\lim_{x\to y}\left(\frac{\sin\left(\sqrt{x}-\sqrt{y}\right)}{x^2-y^2}\right)$$

$$x^2+x-10100$$

$$2x-4-2x-1$$

$$y'+4xy=76x$$

$$\frac{dy}{dx}sin\left(x\right)cos\left(x\right)=y+sin^3x$$

$$\frac{4x^3y^2}{3x^2}$$