A-Level Maths: I3-01 Numerical Integration: Estimating using Rectangles

[johnlynch]

Do you think rectangles would come up on the exam or should we just focus on trapeziums?

[hingsak]

Hello,
If we were asked to evaluate an integral numerically, do we have to use the absolute values of y if part of the curve is under the x-axis?

[Ok-egdg]

Why not find the area of the rectangle between (0, 0), (0, 1) (2, 1) (2, 0) and integrate for the remaining area, since the area of X^2 and x^2+1 are the same when integrating