For what value of the constant c$$is the function f$($x$)$continuous on the interval$($$,$$)$wheref$($x$)=\{$x$24$c$$if$$x$45$cx$6$c$$if$$x$>4.$ If the answer in infinity, you can type in INF in the blank.$$ If the answer is negative infinity, you can type $-$INF.$$ If the answer is does not exist, you can type in DNE.$$ Otherwise, write the number as an integer or reduced fraction.