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March 5th, 2011, 07:03 PM   #1
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Maximum value

If and and . Then
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March 5th, 2011, 09:58 PM   #2
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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
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March 5th, 2011, 10:02 PM   #3
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Re: Maximum value

So that folks will not have to copy and paste the URL into their browser:

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March 5th, 2011, 10:56 PM   #4
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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 r - 3r + 1.
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March 11th, 2011, 07:08 PM   #5
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Re: Maximum value

skipjack you are saying right.

explanation plz.

thanks
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March 11th, 2011, 07:10 PM   #6
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Quote:
Originally Posted by stuart clark
skipjack you are saying right.
Always. (Assuming not IMO problems)
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