Estimate �ç 6 0 6−x^2 dx using 3 left rectangles.
f(x) = 6-x^2
your left endpoints are 0,2,4
So, the area is approximated by adding up width * height for each rectangle
2*f(0) + 2*f(2) + 2*f(4)
your left endpoints are 0,2,4
So, the area is approximated by adding up width * height for each rectangle
2*f(0) + 2*f(2) + 2*f(4)