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Math Help - Limits

  1. #1
    Junior Member
    Joined
    Mar 2006
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    Limits

    Just need somebody to double check a few problems for me.

    lim 9-x^2/x-3
    x->3

    lim -(x-3)(x-3)/x-3 =
    x->3

    -(x+3) = -(3+3) = -6


    Next problem
    lim x^2 +x-6/x-2
    x->2

    Lim (x+3)(x-2)/x-2 =
    x->2

    lim x+3=
    x->2

    2+3=5
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  2. #2
    Forum Admin topsquark's Avatar
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    Quote Originally Posted by becky
    Just need somebody to double check a few problems for me.

    lim 9-x^2/x-3
    x->3

    lim -(x-3)(x-3)/x-3 =
    x->3

    -(x+3) = -(3+3) = -6


    Next problem
    lim x^2 +x-6/x-2
    x->2

    Lim (x+3)(x-2)/x-2 =
    x->2

    lim x+3=
    x->2

    2+3=5
    You got them right!

    A tip. Your first problem is:
    \lim_{x \to 2}\frac{9-x^2}{x-3}

    If you click on the expression above it will tell you how to code it in LaTeX. Otherwise you might want to consider using parenthesis so that your expression is unambiguous.

    -Dan
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