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 July 11th, 2016, 03:36 AM #1 Newbie   Joined: Jul 2016 From: Belgium Posts: 3 Thanks: 0 Complex numbers Hello, I had a little trouble in finding the solution and the how-to-solve-it of ((1-i).(1-i)^(-1) )=1 Can someone help me, please? Kind regards, V.
 July 11th, 2016, 04:11 AM #2 Senior Member   Joined: Dec 2015 From: holland Posts: 162 Thanks: 37 Math Focus: tetration error Last edited by manus; July 11th, 2016 at 04:15 AM.
 July 11th, 2016, 04:15 AM #3 Senior Member   Joined: Dec 2015 From: holland Posts: 162 Thanks: 37 Math Focus: tetration 1/((1 - i )^2) = (1 - i)/( -2i )
July 13th, 2016, 01:47 AM   #4
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Quote:
 Originally Posted by Bibi Hello, I had a little trouble in finding the solution and the how-to-solve-it of ((1-i).(1-i)^(-1) )=1 Can someone help me, please? Kind regards, V.

Hello,

((1-i).(1-i)^(-1) ) = (1-i). 1/(1-i) = 1

The important thing is that you remember that (1-i)^(-1) = 1/(1-i).

Best regards,
Shawn Akhtaran
BASc Electrical Engineering, UBC
Math, Physics, and Engineering Tutor

Last edited by shawn1973; July 13th, 2016 at 01:50 AM.

 July 13th, 2016, 02:39 AM #5 Math Team     Joined: Jul 2011 From: Texas Posts: 3,034 Thanks: 1621 Duplicate post ... asked & answered complex numbers

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