$$\frac{\frac{d}{dx}e^{3x}}{x}$$

$$x+7y=17$$

$$-11x+9>2x-30$$

$$\sec\left(x\right)\cos\left(x\right)\sin\left(x\right)=\sin\left(x\right)$$

$$\int\:\tan^7\left(x\right)\sec^9\left(x\right)dx$$