$$\frac{dy}{dx}=\frac{3000}{1+0.25x}$$

$$\int x^{-2}\cdot\cos\left(x\right)dx$$

$$-2mx+5a^2-mx-2a^2$$

$$\left(-16mn^4\right)^2$$

$$\left(w^2+\frac{1}{4}\right)^3$$

$$\lim_{x\to\infty}\left(\frac{2x^3+4}{6x^4-5x^2+x^2}\right)$$

$$\int c^xdu$$