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Applying terms in square roots -yeesh

  1. Mar 29, 2006 #1
    [​IMG] where X is the number into the term [​IMG]
    Computer F'(6)

    The square root is what's giving me my most difficulty. I don't know how to apply the term with a square root and computer f'(6). I've about given up, but it's important to know. Help is needed for this one.
  2. jcsd
  3. Mar 29, 2006 #2
    Do you know the chain rule?

    Think of the general case where [itex]f(x) = \sqrt{ax + b} = (ax+b)^{0.5}[/itex]. Now let u=ax+b and apply the chain rule.
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