Question

lim
x→0−

9/x − 9/|x|

help would be appreciated!

Answer 1

I'm getting zero on this again...

Answer 2

Does 0- mean "approach only from the left"?

Answer 3

yes!

Answer 4

From the negative only side of zero, absolute value of x is always = negative x, because x is neg, so |x| = -x
So 9/x - 9/(-x) = 9/x + 9/x = 18/x

Answer 5

so the limit as you approach 0 of 18/x is infinity (I think)

Answer 6

Oh.. I got 18 too but I wasnt sure if that was correct but thank you!!

Answer 7

I don't think the limit is 18 though

Answer 8

Oh hmm...

Answer 9

so it would in positive infinity?

Answer 10

f(x) = 18/x

at zero, it's undefined, but close to zero on the negative side, it gets giant quick...

yes, positive infinity

Answer 11

RIght. ah thank you so much!!

Answer 12

Glad to help :)