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Consider the hyperbolic paraboloid with equation z = x^2 - y^2. What is the directional derivative...

Consider the hyperbolic paraboloid with equation z = x^2 - y^2. What is the directional derivative when x = 5 and y = 3 in the direction from (5,3) to (8,7)? What is the direction for the maximum directional derivative at (5,3)? What is the maximum directional derivative at (5,3)?

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