Hi. For my homework one of the first things I'm supposed to be able to do is find the inverse of

y = (4+e^x)/(4-e^(-x))

I don't get how this is possible. When I try to find the natural log of both sides I end up with

lny = ln(4+e^x) - ln(4-e^x)

There must be some algebra I'm not getting here, because I know there's no log rule that can help me get that X out of the ln

Thanks, the homework is due tomorrow