# Math Help - Calculating Limits

1. ## Calculating Limits

I'm having trouble finding the solution for the lim as x-> 0-.

Calculate:

and
?

I understand the right-hand limit, but the left-hand limit keeps stumping me. I thought it should be -4, but it apparently it is not. Any help would be much appreciated. Thanks for the help in advance.

2. Originally Posted by jwebb19
I'm having trouble finding the solution for the lim as x-> 0-.

Calculate:

and
?

I understand the right-hand limit, but the left-hand limit keeps stumping me. I thought it should be -4, but it apparently it is not. Any help would be much appreciated. Thanks for the help in advance.

Hint if $x\to 0^+$ you can replace $|4x| \mbox{ by }4x$.

And if $x\to 0^-$ you replace it by $-4x$.

3. Bah! I hate putting solutions into online programs! For some reason, it said the limit as x->0+ was 4 which totally threw me out. Thanks a lot for the help!