Questão 3312592

\(\frac{e^{-\alpha}\alpha^k}{k!}\)

\(\frac{e^{\alpha}\alpha\ ^k}{k!}\)

\(\frac{e^{-\alpha}\alpha^k}{k-1!}\)

\(\frac{e^{\alpha}\alpha^k}{k-1!}\)

\(\frac{e^{\alpha}\alpha^{-k}}{k-1!}\)