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Math Help - Finding Value of Functions

  1. #1
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    Question Finding Value of Functions

    Using the following table:
    Finding Value of Functions-functions.jpg
    For each of the following functions, if they are defined at the given point, find their value.
    Otherwise explain why they are undefined.

    1. 2f(x) + g(x) when x=3
    if i substitute the x then itll be 2f(3)+g(3)=2f(30)+g(40)..what is the next step?

    2. 3f(2)-2g(0)
    sub again 3f(10)-2g(-20)

    3. (1/2)f(g(5))
    =(1/2)f(g(5)) how do i proceed from this step? could this possibly be undefined?

    4. g(x-3)/f(x+6) when x=3
    =g(3-3)/f(3+6) = if i cancel the 3 then if im corrent it would be -3/6?
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  2. #2
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    Re: Finding Value of Functions

    So read off your table the values of f and g at those values of x...
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  3. #3
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    Re: Finding Value of Functions

    Quote Originally Posted by Prove It View Post
    So read off your table the values of f and g at those values of x...
    so for the 1st one f(x) = 30 and g(x)=40
    what is the '2' representing? 2xf? so 2(f(x))=60?
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  4. #4
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    Re: Finding Value of Functions

    Yes
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