B bboyelement Member Joined May 3, 2005 Messages 242 Gender Male HSC 2006 Oct 10, 2006 #1 http://www.angelfire.com/ab7/fourunit/cssa2006.pdf i need help on 8a) part 3 and 4
V vafa Member Joined Mar 16, 2006 Messages 302 Gender Undisclosed HSC N/A Oct 11, 2006 #2 Solution: View attachment 13848 Last edited: Oct 14, 2006
R Riviet . Joined Oct 11, 2005 Messages 5,593 Gender Undisclosed HSC N/A Oct 11, 2006 #3 A slight alternative to part iii): (z5-1)/(z-1)=(z4+z3+z2+z+1)=(z2+...)(z2+...) Don't expand and let z=1, take common factor of 2 from each bracket on RHS and you instantly get the required result. Last edited: Oct 11, 2006
A slight alternative to part iii): (z5-1)/(z-1)=(z4+z3+z2+z+1)=(z2+...)(z2+...) Don't expand and let z=1, take common factor of 2 from each bracket on RHS and you instantly get the required result.
