Question 1

The relation f is defined by 2 0 3( ) = 3 3 10 x , xf x x, x  ≤ ≤ ≤ ≤ The relation g is defined by 2 , 0 2( ) 3 , 2 10 x xg x x x  ≤ ≤= ≤ ≤ Show that f is a function and g is not a function.