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Math Help - Functions

  1. #1
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    Functions

    I was doing some math work and I got stuck on a few questions...

    If G(X) = 2x + 3
    x-4
    Find a value of X where G(X) does not exist.
    Does this mean make everything = 0?

    Given f(x) = x^2 find in smplest form
    B. F(2+h)-f(2)
    h
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  2. #2
    Eater of Worlds
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    #1: What values result in division by 0

    #2: \frac{(2+h)^{2}-4}{h}

    Simplify
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  3. #3
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    #1. Yeah I figured as much
    #2.

    I got to the point, and I'm not sure if I'm doing functions right. BUt the answer supposedly is 4+h

    Now assuming I just square the two functions.
    I get, not sure if my math is right, but I get

    4+4h+h^2 - 4
    h
    h^2 + 4h
    h
    Not too sure where I progress from there to get 4 + h. Fast answers, though, lots of appreciation for you guys
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  4. #4
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    I hate to try to rush you guys, bt I have a test tommorow, and I would much prefer being able to do that particular problem before taking it Sorry for the double post!

    Ok I just realized, the h is divided from both h^2 and 4h, thus leaving H + 4, am I right?
    Last edited by vi3tlam; August 14th 2008 at 06:16 PM.
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  5. #5
    Super Member 11rdc11's Avatar
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    Yep you right
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