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August 26th, 2009, 10:39 AM  #1 
Newbie Joined: Aug 2009 Posts: 2 Thanks: 0  De Moivre's formula and Newton's binomial formula
Using De Moivre's formula and Newton's binomial formula show that: a) b) I really have no idea how to transform them using these formulas?? 
August 26th, 2009, 03:50 PM  #2  
Global Moderator Joined: May 2007 Posts: 6,804 Thanks: 715  Re: De Moivre's formula and Newton's binomial formula Quote:
 
August 26th, 2009, 04:42 PM  #3 
Senior Member Joined: May 2008 From: York, UK Posts: 1,300 Thanks: 0  Re: De Moivre's formula and Newton's binomial formula
I think the idea here is to use De Moivre's formula, namely Note that if then so De M.'s formula can be modified to Therefore, Expand out to get the required result. 
August 27th, 2009, 06:17 AM  #4 
Newbie Joined: Aug 2009 Posts: 2 Thanks: 0  Re: De Moivre's formula and Newton's binomial formula
Thanks! I managed to do the second part myself.


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binomial, formula, moivre, newton 
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