Approximate the area under the curve y = x^3 + 2 from x = 2 to x = 5 using a left sum with 6 subdivisions.

Question

The area is approximately=

just answer and explanation please and thanks.

Answer 1

again, each rectangle has width 1/2, so the area is
1/2 (f(2) + f(5/2) + ... + f(9/2))