Here's the question you clicked on:
suju101
lim x-->4^- |x|/x and lim x-->0^- |x|/x
what does the ^ mean?
oh never mind i got it. limit from the right and left
first one is \[\frac{4}{4}=1\]
second one is \[\frac{-x}{x}=-1\]
because you are taking the limit as x goes to zero from below, which means that x is negative, which makes |x| = -x