1- You should post this in calculus sub-forum.
2- You have a sign mistake in the last line.
3- You should not have that "x" in the second term in the last line.
But if this is in calculus then it is not in pre-university forum. And I am pre-university. Please advise? And how would I now move this thread to calculus?
But if this is in calculus then it is not in pre-university forum. And I am pre-university. Please advise?
Read the "sticky" post at the top of the Pre-Calculus forum. In this American-based web site, calculus is considered university-level, regardless of whether you are actually at university or not.
Last edited by Opalg; March 3rd 2010 at 12:38 PM.
Reason: for clarity