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  • Jan 18, 2010, 12:55 PM
    ronniebelle
    Algebraic proofs
    Prove that
    Ad+bc<ac+bd
    Given a<b
    Given c<d
  • Jan 18, 2010, 01:03 PM
    ebaines

    Let and . Then sub these into ad + because and ac + bd, and see how the two compare.

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