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Math Help - Lagrangia- mean value theorem

  1. #1
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    Dec 2006
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    Lagrangia- mean value theorem

    i tried to understand the uses of this theorem... maybe you can help me with this one.
    i have a quastion (attached file). i assume i should use mean value theorem to prove it... but i don't know how (how do i choose the interval?)
    Attached Thumbnails Attached Thumbnails Lagrangia- mean value theorem-2.jpg  
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