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Find the maximum value of 8x - x^2, for real numbers x.

 Jun 2, 2020
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-x^2+8x       max will occcur at  x   =   -b/2a   =  - 8 / (-2) = 4

                           value of the function will be     - (4^2) + 8(4) = 16  

 Jun 2, 2020

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