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5. The graph below illustrated two level curves of an unknown function 2 = f (53,34). Given that the inner Circle is 562 +342 = 5 with z = 2 and the outer Circle is $2 +342 = 10 with z = 1. Y 4. (a) Use the graph to give a reasonable estimation for fm(2, 1) and fy(2,1). (b) Can you nd a function z : f (as, y) who has the given level curves? The answer is not unique