Examine the function for relative extrema. f(x,y)=−2x 2
−3y 2
+2x−6y+5
(x,y,z)=(
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relative minimum relative maximum saddle point none of these [−/6.25 Points] Use Lagrange multipliers to find the indicated extrema, assuming that x and y are positive. Maximize f(x,y)=6x+6xy+y Constraint: 6x+y=600 f()=