$49x^2-y^2$

$\frac{dy}{dx}=23\:\:y\left(0\right)\:=\:1\:$

$\lim_{x\to a}\left(\left|x-a\right|\sin\left(\frac{1}{x-a}\right)\right)$

$\lim_{x\to0}\ln\left(x\right)\left(\sqrt[3]{x}\right)$

$\int\frac{x^2}{\left(4-x^2\right)^{\frac{9}{2}}}dx$

$\frac{8x^3-125}{2x-5}$

$e^{\ln\left(6\right)}$