$\left(x^{11}\right)^7$

$\int_1^{\infty}\left(\frac{1}{x^{.8}}\right)dx$

$\int\left(x^7\sqrt{x^4+1}\right)dx$

$4x^4-9y^2$

$\frac{3s\:+10}{s\left(s^2+s+20\right)}$

$\sec\left(0.34\right)$

$\frac{dy}{dx}\left(\left(\frac{1}{x}\right)+\left(\frac{1}{y}\right)=1\right)$