The figure below shows level curves of a function f(, y). Let the square R = [0, 4] x [1, 5]. Estimate the value of [ ], f(, y) d.A with the Midpoint rule and m = n = 2. (Be careful to notice what R is defined to be!) I SR f (x, y) dA = (click on the figure to enlarge it) 4 151 20 10 2 .L L 2 3 4 S