find f'(x) by applying this formula:
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Originally Posted by ^_^Engineer_Adam^_^ find f'(x) by applying this formula: I'm going to have to assume we know two limits: (I'm going to use h instead of to save me a bit of coding.) Now expand the sin(x + h) = sin(x)cos(h) + sin(h)cos(x) in the numerator: You can now see the limits I mentioned above. So: -Dan
Last edited by topsquark; Dec 3rd 2006 at 11:58 AM. Reason: Fixed the "-"
There should be a minus after you expand the sine. That might lead to an error in the end.
Originally Posted by ThePerfectHacker There should be a minus after you expand the sine. That might lead to an error in the end. I fixed it in the original post. Thanks for the catch! -Dan
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