Question

How do you tell if the limit of a function does not exists?

Answer 1

What happens to your function when you evaluate the limit?

Answer 2

If you get any of those pesky nonreal answers, like division by zero or square rooting negatives, stuff like that

Answer 3

when right limit not equall left limit
unbonded increase or decrease
oscillatoin in graph

Answer 4

How do you evaluate a right handed or left handed limit?

Answer 5

Choose a value on the lower side of your limit and an equal value on the upper side so that you are approaching the limit from both sides.

Answer 6

See if this helps you: http://calculusapplets.com/limitsfail.html

Answer 7

http://www.calculus-help.com/tutorials
these are great videos