Let f(x, y) = xe*-y and P = (5, 25). Calculate ||V fpll- (Express numbers in exact form. Use symbolic notation and fractions where needed.) |Vfell = Find the rate of change of f in the direction V fp. (Express numbers in exact form. Use symbolic notation and fractions where needed.) the rate of change: Find the rate of change of f in the direction of a vector making an angle of 45 with V fp- (Express numbers in exact form. Use symbolic notation and fractions where needed.) the rate of change:

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