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(1 point) Letf(x,y) = xer-y and P = (8, 64). (a) Calculate lIVf(P)lI. (b) Find the rate of change of f in the direction Vf(P

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(1 point) Letf(x,y) = xer'-y and P = (8, 64). (a) Calculate lIVf(P)lI. (b) Find the...
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