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Q.
If $f : N \rightarrow N$ where $f ( x )= x -(-1)^{ x }$, then $f$ is
Relations and Functions - Part 2
Solution:
$x=\{1,2,3,$..............
If $x =2 n , n \in N$ then
$f(x)=x-1 $
$f(x) \in\{1,3 \ldots \ldots \ldots \ldots \ldots\}$
If $x=2 n-1, n \in N f(x)=x+1$ then $f(x) \in\{2,4$,........