$\lim_{x\to0}\left(\frac{5\:a\cos\left(\pi n\right)}{6}\right)$

$\left(xy^2+y^2\right)dx\:+\:x\:dy=0$

$\int\frac{\sin\left(\frac{1}{x^n}\right)}{x^{n+1}}dx$

$\lim_{x\to0}\left(\frac{sin\left(e^{x^3}-1\right)}{1-cos\left(x\right)}\right)$

$\left(2m+3n\right)\left(4p+b^2\right);\:b=2;\:m=\frac{1}{2};\:n=\frac{2}{3};\:p=\frac{1}{4}\:$

$8.25=\log\left(\frac{177.8}{x}\right)$

$\frac{d}{dx}\frac{2-2xy^2}{2x^2y}$