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Math Help - express inverse function

  1. #1
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    Post express inverse function

    f(x)= √3-x. Find expression for f^-1(x).

    My answer is x=√3-y, y≠ all real numbers ≥ 3

    Is that correct?

    Thanks
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  2. #2
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    Quote Originally Posted by live_laugh_luv27 View Post
    f(x)= √3-x. Find expression for f^-1(x).

    My answer is x=√3-y, y≠ all real numbers ≥ 3

    Is that correct?

    Thanks
    is the function

    f(x) = \sqrt{3} - x

    or

    f(x) = \sqrt{3-x}

    ?
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  3. #3
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    Post



    sorry, I don't know how to type that on the computer
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  4. #4
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    Quote Originally Posted by live_laugh_luv27 View Post


    sorry, I don't know how to type that on the computer
    then you need to learn ... at least use parentheses as grouping symbols.


    inverse ...

    y = \sqrt{3-x} , x \le 3

    x = \sqrt{3-y}

    x^2 = 3-y

    y = 3 - x^2 , x \ge 0
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