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Math Help - Set Theory Problem

  1. #1
    Newbie
    Joined
    May 2010
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    Set Theory Problem

    Let f:R -> R, f(x)= x^2, and g:R-> R,g(x) = 2x.
    Find the following:

    a) f + g
    b) f/g
    c) f o g
    d) g o f

    Thank You.
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  2. #2
    MHF Contributor
    Joined
    Sep 2008
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    West Malaysia
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    1,261
    Quote Originally Posted by slipz418 View Post
    Let f:R -> R, f(x)= x^2, and g:R-> R,g(x) = 2x.
    Find the following:

    a) f + g
    b) f/g
    c) f o g
    d) g o f

    Thank You.
    hi

    (a) f+g is simply f(x)+g(x) .

    (b) f(x)/g(x)=x^2/2x=x/2

    (c) fg(x)=(2x)^2

    (d) gf(x)=g(x^2)=2x^2
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  3. #3
    Newbie
    Joined
    May 2010
    Posts
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    Oh wow that was very simple haha thank you!
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