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Math Help - slove two exercises

  1. #1
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    greece
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    slove two exercises

    1)The function g is twice differentiable at R and true:g(-1)=7.to show that the function
    f(x)=3(x-2)ēg(2x-5)
    is twice differentiable at R and find the slope of f' at xo=2

    2)for the function f are:
    i)is twice differentiable at R
    ii)is unnecessary
    iii)the slope of the point xo=-1 is -2
    to show that the function
    g(x)=f(x)cosx-f(cos)
    is twice differentiable at R to find the number g''(0)

    can slove this exercises to help me?

    p.s iam new at the forum iam from greece and sorry for my english the exercises were translated verbatim from GR to EN with google translation

    Thanks in advance
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  2. #2
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    greece
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    Re: slove two exercises

    Can anyone help? please
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  3. #3
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    greece
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    Re: slove two exercises

    It's so hard?plese tell me anything
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