Find the derivative of f(x)=xnn!f(x) = \frac{x^n}{n!}f(x)=n!xn for positive integer nnn.
xn−1(n−1)!\frac{x^{n-1}}{(n-1)!}(n−1)!xn−1
nxn−1n!\frac{nx^{n-1}}{n!}n!nxn−1
xn(n−1)!\frac{x^n}{(n-1)!}(n−1)!xn
Both (a) and (b)