$\lim_{x\to\infty}\left(\frac{3}{x}\right)\left(\frac{3^{1+\frac{1}{x}}-1}{3^{\frac{1}{x}}-1}\right)$

$4+-13+-1+-8$

$\frac{1-a^2b^4c^8}{1+ab^2c^4}$

$\int\cos^5\left(x\right)\sin^{10}\left(x\right)dx$

$\frac{d}{dx}\sqrt{19x+11}$

$3\cos x+\sqrt{2}=\cos x$

$\int ya^ydy$