$\lim_{x\to0}\left(\frac{lnx}{\frac{1}{x^{4.3}}}\right)$

$\left(\frac{5}{4}x+2ay^2\right)^2$

$\int_1^12\pi\left(1-x\right)^2xdx$

$\frac{dy}{dx}=y^2-6y+13$

$\int\frac{x^2}{\sqrt{-x^2+6}}dx$

$\lim_{x\to\pi}\left(\sin\left(5x\right)\right)$

$\lim_{x\to0}\left(\frac{\sin5x\cos8x-\sin5x}{16x^{3}}\right)$