Compute the following

a$){\displaystyle \underset{0}{\overset{2}{}}}(x^4+3x^2)dx$

b$){\displaystyle \underset{0}{\overset{4}{}}}\sqrt[\phantom{2}]{x}dx.$

c$)$ The area under the graph of $y=4-x^2$ over the interval $-2,2.$

d$)$ The area between the graph of $y=x$ and $y=x^2$ over the interval $1,4.$Compute the following

a$){\displaystyle \underset{0}{\overset{2}{}}}(x^4+3x^2)dx$

b$){\displaystyle \underset{0}{\overset{4}{}}}\sqrt[\phantom{2}]{x}dx.$

c$)$ The area under the graph of $y=4-x^2$ over the interval $-2,2.$

d$)$ The area between the graph of $y=x$ and $y=x^2$ over the interval $1,4.$