Given the function of two variables ƒ(x, y) = 4x³ − 60x² + 12xy² − 24y² +3. - - Find and classify all critical points of the function f(x, y). Question ! a) b) [1 *] Find a vector u such that the directional derivative of the function f(x, y) at th point (-1,4) in the direction of u is equal to 36√/145.

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A: Given function is fx, y, z = xy2-x2z+yz2-z-11

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A: Given: Since you have asked multiple question, we will solve the first question for you. If youwant…

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