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Easy limit problem

  1. Jun 7, 2010 #1
    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. jcsd
  3. Jun 7, 2010 #2


    Staff: Mentor

    Show us what you tried and we'll help you with this problem.
  4. Jun 7, 2010 #3
    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
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