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Math Help - Couple of questions

  1. #1
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    Couple of questions

    - Whats the inverse of:

    f(x) = 2x / 3-x


    - What is the geometric mean of 4sin^2 x and 4 cos^2 x, in terms of sine?

    Thanks.
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  2. #2
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    Quote Originally Posted by Y-So-Serious View Post
    - Whats the inverse of:

    f(x) = 2x / 3-x

    For y = \frac{2x}{3-x}

    swap x and y then solve for y.

    Quote Originally Posted by Y-So-Serious View Post

    - What is the geometric mean of 4sin^2 x and 4 cos^2 x, in terms of sine?
    make this substitution

     \cos^2 x = 1-\sin^2x

    The geometric mean of two numbers a and b is \sqrt{a\times b}
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  3. #3
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    Can you solve the problems too? I need the final answers.

    Thanks.
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  4. #4
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    This Math Help Forum not Math Solve Forum.

    I'm happy to help you further if you show me your attempt at the problems.
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