$$\frac{dy}{dx}=\frac{6xy}{\left(ln\:y\right)^2}$$

$$\lim_{x\to\infty}\left(e\right)^{\frac{t}{x}}$$

$$\sec\left(\sin\left(1^{-1}\right)u\right)$$

$$-7y^2+3y^2$$

$$6x^3+3x^2+8x+4$$

$$\int\:\frac{3x^2-4x+6}{x^4+2x^3+2x^2}dx$$

$$\left(12f^4+2c^2\right)\left(12f^4+2c^2\right)$$