Homework Help: Easy limit problem

1. Jun 7, 2010

Chunkysalsa

1. The problem statement, all variables and given/known data
Find the derivative of 4/sqrtx using the limit process

2. Relevant equations

3. The attempt at a solution

I know the method and I even know the answer using other (easier) means but I just cannot simplify it. I've tried almost everything i can think of. I feel like this is an easy answer but I'm just not seeing it.

I tried rationalizing the numerator and that helps me with taking the actual limit but I'm having problems simplifying to the correct answer.

2. Jun 7, 2010

Staff: Mentor

Show us what you tried and we'll help you with this problem.

3. Jun 7, 2010

Chunkysalsa

Never mind, like I said easy problem just couldnt see it.

Ate lunch and came back to it and it all made sense. Thanks anyway