Q. For real numbers a,b,c if a+b+c=1 then prove that ab + bc + ca < or = 1/3.
Last edited by CaptainBlack; November 10th 2010 at 09:59 PM.
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Originally Posted by akshay1995 Q. For real numbers a,b,c if a+b+c=1 then prove that ab + bc + ca < or = 1/3. Square both sides of and derive an expression for Next, expand and derive an inequality for Combine the two, and the required result follows.
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