The correct mirror equation is which f the following ?

\(\frac{1}{f}\) = \(\frac{1}{u}\) + \(\frac{1}{v}\)

\(\frac{1}{f}\) = \(\frac{1}{u}\) - \(\frac{1}{v}\)

\(\frac{1}{f}\) = \(\frac{1}{v}\) - \(\frac{1}{u}\)

None of these.