$\frac{dy}{dx}=9+\frac{3}{\sqrt{x}}$

$\lim_{x\to e}\left(\frac{1-\cos\left(x\right)}{x^2}\right)$

$\int\frac{2\sin\left(w\right)-1}{\cos\left(w\right)^2}dw$

$\lim_{x\to+0}\left(7sin\left(x\right)ln\left(x\right)\right)$

$\int\frac{x^4}{x^5-15}dx$

$4x^2+48x+121$

$\int3\sin^4\left(5x\right)dx$