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.