1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Another inverse trig function

  1. Jan 28, 2010 #1
    Let f(x) = sqrt(49-x^2) + 7arccos(x/7).

    Then f'(x) can be written in the simplified form -((x+c)/(mx+n))^p

    What are the values of c, m, n and p?

    So far what I got in simplified form is (-x-7)/sqrt(49-x^2)

    How can I make my simplified form into that simplified form?
  2. jcsd
  3. Jan 28, 2010 #2


    User Avatar
    Science Advisor
    Homework Helper

    Hi shiri! :smile:

    (try using the X2 tag just above the Reply box :wink:)

    Hint: 49 - x2 = (7 + x)(7 - x) :smile:
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook