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(Solved): Use the contour diagram of \( f \) in the figure below to decide if the directional derivative at ...
Use the contour diagram of \( f \) in the figure below to decide if the directional derivative at point \( (-1,1) \) in direction \( \vec{i}+\vec{j} \) is positive, negative, or approximately zero. Negative Positive Approximately zero
Expert Answer
At point (-1,1) in direction i + j we are mo