$$\int\frac{10}{x\sqrt{49x^2-4}}dx$$

$$\int\left(16sec^2\left(8x\right)tan\left(8x\right)\right)dx$$

$$\lim_{x\to\infty}\left(\frac{\left(x^2+x\right)}{e^{x^3}}\right)$$

$$\frac{dy}{dx}=\frac{x^2y}{x+4}$$

$$16b^4-24b^2+9$$

$$15b-0.6=44.4$$

$$\:\int\frac{4}{7x^2+14x+14}dx$$