In class, we have analyzed the Exclusive$-$OR $($XOR$)$ function of two variables:

f$($a$,$b$),$ which is represented as f $=$ a $$ b $=$ ab$+$ a$$ b$.$ Similarly, the XNOR function of two variables,

g$($a$,$b$)="""""""""=$ a$"""$b $=$ a$$ b$+$ ab$.$ You will now analyze the $3-$variable XOR$/$XNOR functions