Consider f(n)={1if n=0n⋅f(n−1)if n>0f(n) = \begin{cases} 1 & \text{if } n = 0 \\ n \cdot f(n-1) & \text{if } n > 0 \end{cases}f(n)={1n⋅f(n−1)if n=0if n>0. Which are TRUE?
Defined only for even nnn
f(n)=n!f(n) = n!f(n)=n! for all n≥0n \geq 0n≥0
Infinite recursion for negative inputs
Both b and c