# Thread: [SOLVED] inverse of an ln function

1. ## [SOLVED] inverse of an ln function

find a formula for the inverse of y = ln(x + 8)

i tried 8/lnx but it was wrong and im stuckk

2. Originally Posted by kyleu03
find a formula for the inverse of y = ln(x + 8)

i tried 8/lnx but it was wrong and im stuckk
The expression $y=ln(x+8)$ means that $e^y=x+8$.

$x=e^y-8$. The inverse function is therefore $y=e^x-8$