Calculus I question

please find the attachment.

1a- estimate the value of the define integral

1 b is your estimate an overestimate, an underestimate, or exactly equal to the value of the definite integral? Explain why in one sentence!

3. {a} {ID paints) Estimate the value of the denite integral IUD f :3 ens z dzs, 1ll' using midpninta and fun: rectangles. Write nut ever term nf the sum; you do net need to evaluate the sum. [b] {5 points) Is will estimate an nvereatimate, an underestimate, or exactly equal tn the value ef the denite integral? Explain why in ens sent-lee