Question

find the range of following function
$f(x) = |x - 1|$

Answer 1

F(x) = (x-1)/(x-1) x>1 and you can see both numerator and denominator are same for every x therefore F(x) =1 for all x>1

Similarly F(x) = -1 for all x<1

F(x) : (all real nos.) -( 1) to {-1,1}