- #1

- 23

- 0

Relevant Equations

Δx=b-a/n

x

_{i}=a+(Δx)(i-1) -its i-1 because we're using a left endpoint, otherwise it would be just i.

f(x

_{i})= (a+(Δx)(i-1))^2(Δx)

The Attempt

Δx=b-a/n

= 1-(-3)/n

=4/n

x

_{i}= -3+4/n(i-1)

f(x

_{i})= (-3+4/n(i-1))^2(4/n)

=(9-(24i/n)+(24/n)+(16i^2/n^2)-(32i/n^2)-(16/n^2))*(4/n)

I got stuck at this point. I have no idea how to move on from here. Any advice?