This question is incomplete, the complete question is;
If the Midpoint Rule is used on the interval [ -1, 11 ] with n = 3 subintervals, at what x-coordinates is the integrand evaluated?
Answer:
the x-coordinates are; [1, 5, 19]
Step-by-step explanation:
Given that;
interval = [ -1, 11 ]
interval length = [( 11 + 1 ) / 3] = 4
so intervals are; [ -1, 3 ] [ 3, 7 ] [7, 11 ]
now midpoints for the intervals are the x-coordinates
[ (1 + 3) / 2 ] = 1
[ (3 + 7) / 2 ] = 5
[ (7 + 11) / 2 ] = 19
therefore the x-coordinates are; [1, 5, 19]
