suju101 Group Title lim x-->4^- |x|/x and lim x-->0^- |x|/x 2 years ago 2 years ago

1. satellite73 Group Title

what does the ^ mean?

2. satellite73 Group Title

oh never mind i got it. limit from the right and left

3. satellite73 Group Title

first one is $\frac{4}{4}=1$

4. satellite73 Group Title

second one is $\frac{-x}{x}=-1$

5. satellite73 Group Title

because you are taking the limit as x goes to zero from below, which means that x is negative, which makes |x| = -x