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Math Help - use formal definition for formal proof (limits)

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    use formal definition for formal proof (limits)

    Use an appropriate formal definition to give a formal proof of each of the following.


    (a) lim (x3− 5x+6) = 2
    x→1



    (b) lim 9-4x2 = 6
    x→ −1.5 3+2x


    (c) lim 1 = ∞
    x→ −3 (x+3)4


    (d) lim lnx = - ∞
    x→0+



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    Last edited by asifrahman1988; March 17th 2013 at 02:01 AM.
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    Re: use formal definition for formal proof (limits)

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    Re: use formal definition for formal proof (limits)

    Quote Originally Posted by asifrahman1988 View Post
    Use an appropriate formal definition to give a formal proof of each of the following.


    (a) lim (x3− 5x+6) = 2
    x→1



    (b) lim 9-4x2 = 6
    x→ −1.5 3+2x


    (c) lim 1 = ∞
    x→ −3 (x+3)4


    (d) lim lnx = - ∞
    x→0+



    i've uploaded an attachment with the question in a better, more understandable format
    Could you show us what you've tried for each question please?
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