# Math Help - limit help

1. ## limit help

I haven't done any work with limits for some time and am trying to revise limits and have come across one that has me confused;

What's the best way to evaluate the following,

limit as x -> 0 of (a^x - b^x)/x

any help here would be appreciated.

Cheers

2. Originally Posted by monster
I haven't done any work with limits for some time and am trying to revise limits and have come across one that has me confused;

What's the best way to evaluate the following,

limit as x -> 0 of (a^x - b^x)/x

any help here would be appreciated.

Cheers
Using l'Hopital's Rule would be the simplest approach.

3. I'm sorry but have thought about it can't see how to do this could you start me off, i'm hoping once i see the beggining it jogs my memory

4. Originally Posted by monster
I'm sorry but have thought about it can't see how to do this could you start me off, i'm hoping once i see the beggining it jogs my memory
Have you learned l'Hopital's Rule or not?