Question 502507
For x>0, the numerator and denominator are the same value so the function is equal to 1. 
For x<0, the numerator is always > 0 and the denominator has the same magnitude but opposite sign, so the function is equal to -1. 
So the range is f(x)=-1 and f(x)=1
The graph is below:
{{{graph(300,300,-10,10,-2,2,abs(x-1)/(x-1))}}}