Maximum value If and and . Then 
Re: Maximum value Look at the 'integer solutions' section of: http://www.wolframalpha.com/input/?i=x^2+%2B+y^2+%2B+z^2+%3D+6+and+x%2By%2Bz%3D0 Calculate the value of the expression for each set of solutions The maximum value is your answer :D 
Re: Maximum value 
The variables are not required to be integers! The expression is to be maximized, not minimized. The maximum seems to be 6, achieved when x, y and z are the zeros of r³  3r + 1. 
Re: Maximum value skipjack you are saying right. explanation plz. thanks 
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