(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

If f(x) = x + cos(x), find f-inverse of (1)

2. Relevant equations

**first time asking a forum question, please inform me of any errors in posting this question

3. The attempt at a solution

(1) y = x + cos(x) => if y = f(x)

(2) x = y + cos(y) => if x = f(y)

(3) ** solve for y? this is where I am stuck, is it possible to completely show work and solve for "y" before plugging in "1"? I tried switching the variables and using the solve command on my ti-89 and it gives the answer:

cos(y) + y = x

1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

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# Homework Help: Help with inverse function problem

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