EVALUATE THE INTEGRAL BELOW,FOR ACCURACY, $x=0\mathrm{.}002$ AND $x=0\mathrm{.}004$

a$)$ UPPER LIMITSUMMATION

b$)$ LOWER LIMITSUMMATION

c$)$COMPARE WITH REAL VALUE. $($THIS IS AN EXCEL PRACTICE$)$

$I={\displaystyle \underset{0}{\overset{2}{}}}(e^x+x^2)dx($please also explain what question is asking and how to solve in excel, which is what I think the question is asking$)$