a$){\displaystyle \underset{1}{\overset{3}{}}}{x}^2+4x+1dx=$

b$){\displaystyle \underset{1}{\overset{3}{}}}\frac{1}{t}dt=$

c$){\displaystyle \underset{0}{\overset{\frac{}{4}}{}}}sin(x)dx=$

d$){\displaystyle \underset{1}{\overset{3}{}}}x(x^2-x)dx=$

e$){\displaystyle \underset{-1}{\overset{2}{}}}4e^{x}dx=$

f$){\displaystyle \underset{1}{\overset{5}{}}}\frac{4+3y^2}{y}dy=$

g$){\displaystyle \underset{0}{\overset{2}{}}}\frac{x^3}{3}+2xdx=$

h$){\displaystyle \underset{-1}{\overset{4}{}}}\frac{1}{1+t^2}dt=$

i$){\displaystyle \underset{-4}{\overset{-1}{}}}\frac{4}{r^3}-4e^{r}dr=$