Question: shown if the function is concave or convex Show if the following functions are concave or convex. f(x1,x2)=x12x1x22x22;S=R2f(x1,x2,x3)=x12x222x32+.5x1x2;S=R3

shown if the function is concave or convex
shown if the function is concave or convex Show
Show if the following functions are concave or convex. f(x1,x2)=x12x1x22x22;S=R2f(x1,x2,x3)=x12x222x32+.5x1x2;S=R3

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