Question: Help please!!! 1) Use the second derivative test to classify each critical point of f(x, y) = -x' +4xy-2y' +1 as a relative maximum, a

Help please!!! 1) Use the second derivative test to classify each

Help please!!!

1) Use the second derivative test to classify each critical point of f(x, y) = -x' +4xy-2y' +1 as a relative maximum, a relative minimum or a saddle point. (10 pts) 2) Use Lagrange multipliers to find all extreme values of f (x, y, z ) = 2x+2y+ z subject to x'+y'+z' =9. (10 pts)

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