Compute the definite integral ${\displaystyle \underset{-\frac{}{2}}{\overset{\frac{}{2}}{}}}cos(x)dx$

Use u substitution to compute ${\displaystyle \underset{-1}{\overset{0}{}}}y(2y^2-3{)}^{5}dy$

Find the area bounded by $f(x)=x^2-2x,$ the $x-$axis and the lines $x=-1$ and $x=2$