Approximate the area under the curve y = x^2 + 1 from x = 2 to x = 5 using a left sum with 6 subdivisions.

Question

The area is approximately=

Answer 1

didn't we already do this?
A = 1/2 (f(2) + f(2.5) + ... + f(4.5))

Answer 2

its wrong when i put it in, the answer supposed to be a number

Answer 3

oh come on. Evaluate f(2) = 5
and also the others, then get a final numeric answer.
Do the math!