Summands 4213

Divide the number 28 into two summands so that their product is maximal.

Correct answer:

a =  14
b =  14

Step-by-step explanation:

a+b=28 f = a b = a   (28a) f = a2 + 28a f = 2a +28 f=0 2a+28=0 a=28/2=14
b=28a=2814=14



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