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    jadestation's Avatar
    jadestation Posts: 1, Reputation: 1
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    #1

    Nov 27, 2011, 07:35 AM
    What are two numbers whose product is -12 and the sum of whose square is minimum?
    Find two numbers whose product is -12 and the sum of whose square is minimum.
    corrigan's Avatar
    corrigan Posts: 115, Reputation: 18
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    #2

    Nov 27, 2011, 06:09 PM
    if AB=-12, then B=(-12)/A. Sum of the squares is just A^2+B^2= Y. Substitute for B and use the derivative to find the minimum.
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