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Math Help - help with logs

  1. #1
    Newbie
    Joined
    May 2005
    Posts
    4

    Really Stuck - Need This Within An Hour if Possile Guys!

    Guys im very confused with Logs etc and am struggling to answer this question, was wondering if anyone of you might know the answer to this. Would really appreciate it. Here goes.

    Choose 3 options that are true statements:

    A) If X=10(4), then log(10)X = 4
    B) If X=10(4), then log(10)4 = X
    C) The gradient of the graph of y=ex at x=1 is e
    D) The gradient of the graph of y=ex at x-1 is e
    E) The gradient of the graph of y=ex at x-1 is 1
    F) The gradient of the graph y=ex at x = 0 is 2
    G) Log(10)a - log(10)b - log(10) (a+-b)
    H) Log(10)a + log(10)b = log(10)(ab)

    Surely one of you Geniuses will know this. Thanks guys!
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  2. #2
    Member
    Joined
    Apr 2005
    Posts
    103
    Use the carrot sign for superscripts or powers. For examples,
    10^4
    e^x

    Use the underscore sign for subscripts. For example,
    F_x

    Please correct your typographical mistakes too.
    Last edited by paultwang; May 18th 2005 at 07:29 PM.
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