Trying to find the inverse of y in the rational equation that's attached via image. There's the work I did that's also attached. Can anyone spot what I did wrong please? :D

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- Dec 4th 2012, 11:17 AMJacobD94finding an inverse of a rational function :D
Trying to find the inverse of y in the rational equation that's attached via image. There's the work I did that's also attached. Can anyone spot what I did wrong please? :D

- Dec 4th 2012, 11:39 AMpickslidesRe: finding an inverse of a rational function :D
After you have swapped x and y you need to solve for y, not x.

Have another go at it. - Dec 4th 2012, 02:29 PMroweRe: finding an inverse of a rational function :D
Look at your answer in the screenshot, your function $\displaystyle f^{-1}$ seems to be independent of any $\displaystyle x$. The computer is expecting it in your definition...