Let $Φ(t) = 1 + a^t$
Show that $1/Φ(t) + 1/Φ(-t) = 1$
I'm not sure where to start on this one. We've just started exponential functions, so I'm going to assume I just subsitute in $1 + a^t$ for $Φ(t)$. I guess I need to then determine what $Φ(-t)$ equals based on the fact that $Φ(t) = 1 + a^t$. Then substitute that information into the equation and it will probably look like a more familiar equation. Am I on the right track?