Question

4. Simplifique a expressão (n+1)! / n!+(n-1)! *

Answer 1

Resposta:

((n - 1)! + n!)/(n + 1)!

(n - 1)! + n*(n - 1)!)/(n + 1)!

(n - 1)!*(n + 1)/(n + 1)*n!

(n - 1)!/n! = (n - 1)!/(n*(n - 1)!) = 1/n