Question: Q 5 & Q 6 is troubling us. Please help. QUESTION 5 Find the points on the surface zzyz = 2 which are closest to

Q 5 & Q 6 is troubling us. Please help.

QUESTION 5 Find the points on the surface zzyz = 2 which are closest to the origin. (Hint: express x2 in terms of y and z, and use this to express the distance formula as a function of y and z. Then minimize this distance function, or its square.) QUESTION 6 Let f(z, y) = ry+- 12.5 y Find the local minimum points, local maximum points, and saddle points of f

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