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Old November 15th, 2009, 08:42 AM   #2 (permalink)
metter
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If you mean what I think you mean:

If only Z it's Z.
X+Z it's: VALxz^2=X^2+Z^2
X+Y+Z it's: VALxyz^2 = VALxz^2 + Y^2



Hope that helps. Cheers.
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