Suppose that f is continuous on a disk that contains the
Chapter , Problem 59(choose chapter or problem)
Suppose that f is continuous on a disk that contains the point sa, bd. Let Dr be the closed disk with center sa, bd and radius r. Use the Mean Value Theorem for double integrals (see Exercise 58) to show that lim rl0 1 r 2 y Dr yfsx, yd dA fsa, bd
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