Question: =+2. The same type of function is defined to be concave if and only if af 1x1 A ,x2 A 2 1 11 2 a2
=+2. The same type of function is defined to be concave if and only if af 1x1 A
,x2 A
2 1 11 2 a2 f 1x1 B
,x2 B
2 # f 1ax1 A 1 11 2 a2x1 B
,ax2 A 1 11 2 a2x2 B
2.
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