1. The problem statement, all variables and given/known data Let f(x)=x+2e(x). Find the inverse of f(x). 2. Relevant equations e(a+b)=e(a)*e(b) e(a-b)=e(a)/e(b) ln(ab)=ln(a)+ln(b) ln(a/b)=ln(a)-ln(b) ln(a^b)=bln(a) 3. The attempt at a solution Switch y and x so that x=y+2e(y) I tried applying ln to the functions at the start, subtracting y and then applying ln, applying ^2 to both sides but nothing seems to come of it. Any first suggestions?