Question

Solve algebraically.
\[\frac{ e^x + e^{-x} }{ e^x - e^{-x} } = 5\]

I started out by multiply both sides by the bottom fraction and whatnot and took the natural logs of both sides and resulted in error.. haven't done math in months..

Answer 1

let \(e^x=u\),
rearrange the equation and get a quadratic