Use left and right endpoints and the given number of rectangles to find two approximations of the area of the region between the graph of the function and the x-axis over the given interval.

Question

g(x) = 2x^2 − x − 1, [3, 5], 4 rectangles
__ < Area < __

Answer 1

the x-values are 3,3.5,4,4.5,5
Find y at those values and add the areas, starting from left or right.

What do you get?

Answer 2

35 and 48