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March 31st, 2012, 07:22 PM  #1 
Member Joined: Jan 2012 Posts: 72 Thanks: 0  Complex numbers: Show that real part is 1
The complex number satisfies the equation Show that the real part of is . What I did was: 
March 31st, 2012, 09:00 PM  #2 
Newbie Joined: Apr 2010 From: kenya Posts: 28 Thanks: 0  Re: Complex numbers: Show that real part is 1
I'm afraid your attempt is only correct up to sixth step.

March 31st, 2012, 09:47 PM  #3 
Member Joined: Jan 2012 Posts: 72 Thanks: 0  Re: Complex numbers: Show that real part is 1
Do you mean that I have expanded wrongly? I still can't spot the mistake.

April 1st, 2012, 06:12 AM  #4 
Senior Member Joined: Jul 2010 From: St. Augustine, FL., U.S.A.'s oldest city Posts: 12,204 Thanks: 511 Math Focus: Calculus/ODEs  Re: Complex numbers: Show that real part is 1
You have: when you should have: 
April 1st, 2012, 09:23 AM  #5 
Math Team Joined: Nov 2010 From: Greece, Thessaloniki Posts: 1,989 Thanks: 133 Math Focus: pre pre pre pre pre pre pre pre pre pre pre pre calculus  Re: Complex numbers: Show that real part is 1 [color=#000000]More simple, .[/color] 

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