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Math Help - Real Valued Functions??

  1. #1
    Junior Member
    Joined
    Oct 2007
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    Question Real Valued Functions??

    Dear All,

    I appreciate the help you provide to solve our problems.

    I need help to solve these questions: -

    Q1. For the real valued function given below
     f(x) = (-x + 9)^3

    Find

     f^{-1} (-1)

    Q2. The real valued functions are given below
     f(x) = 3x^4 - 2x^2
    &
    g(x)=\frac{2}{\sqrt{x}} ,  x \ne 0

    Find gof(x) and gog(x)

    Thanks in Advance.
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  2. #2
    Grand Panjandrum
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    Quote Originally Posted by cu4mail View Post
    Dear All,

    I appreciate the help you provide to solve our problems.

    I need help to solve these questions: -

    Q1. For the real valued function given below
     f(x) = (-x + 9)^3

    Find

     f^{-1} (-1)
    I presume not only real values but of a real argument, then:

    x=10

    RonL
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