Written Assignment $2$

For all problems, evaluate the given integral, showing all $of$ your work.

${\displaystyle \underset{\phantom{}}{\overset{\phantom{}}{}}}co{s}^{-1}xdx$

${\displaystyle \underset{0}{\overset{\frac{}{2}}{}}}co{s}^{2}6xsi{n}^{3}6xdx$

${\displaystyle \underset{\phantom{}}{\overset{\phantom{}}{}}}\frac{dx}{(x^2+81{)}^{\frac{3}{2}}}$

${\displaystyle \underset{\phantom{}}{\overset{\phantom{}}{}}}\frac{2x+18}{x^2+10x+24}dx$

${\displaystyle \underset{0}{\overset{}{}}}13e^{-13x}dx$