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Find the directional derivative of f(x, y) = x*y at (1, - 3) in the direction of - 2i + j. 1. a. 13

1. Find the directional derivative of f(x, y) = xy at (1, -3) in the direction of - 2i + j. a. 13 13 b. 15 11 c. d. V5 - 11

Find the directional derivative of f(x, y) = x*y at (1, - 3) in the direction of - 2i + j. 1. a. 13 13 b. c. d. -11 . None of these

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