$\log\left(10x^4y\right)$

$\frac{1}{2-s}\left(e^{2b-sb}\right)-\frac{1}{2-s}$

$\int\left(\frac{e^x}{\sqrt{1+2e^x}}\right)dx$

$\int\frac{x-8}{x^2-2x-8}dx$

$\int\left(x^5-2x^3-x\right)e^{4x}dx$

$\int\frac{1}{-x^2+12x-32}dx$

$\lim_{x\to0}\left(\frac{\sqrt{5x+49}-5}{x}\right)$