a ht C1 For the function f(x,y) = 4x² + 7y², find the following. a. b. f(x+h,y)-f(x,y) h f(x,y+h)-f(x,y) h c. lim h→0 d. lim = f(x+h,y)-f(x,y) h h→0 f(x,y+h)-f(x,y) h = ...

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