My Math Forum complex number problem

 Pre-Calculus Pre-Calculus Math Forum

 September 16th, 2016, 04:30 AM #1 Newbie   Joined: Sep 2016 From: greece Posts: 2 Thanks: 0 complex number problem (1+i√3)^2= Can u guys solve this one for me? the answer has to be -8 Thanks
 September 16th, 2016, 05:04 AM #2 Global Moderator   Joined: Dec 2006 Posts: 19,741 Thanks: 1815 That seems to be mistyped, as (1+i√3)^3 = -8.
 September 16th, 2016, 05:17 AM #3 Senior Member   Joined: Aug 2016 From: morocco Posts: 273 Thanks: 32 we have $1+i\sqrt{3}=2(\frac{1}{2}+i\frac{\sqrt{3}}{2})=2e ^{i\frac{\pi}{3}}$ thus $(1+i\sqrt{3})^3=2^3e^{i\pi}=-8$
 September 16th, 2016, 05:33 AM #4 Newbie   Joined: Sep 2016 From: greece Posts: 2 Thanks: 0 u are right guys im sorry thanks for making this clear

 Tags complex, math, number, problem

 Thread Tools Display Modes Linear Mode

 Similar Threads Thread Thread Starter Forum Replies Last Post TravisR Algebra 6 June 26th, 2015 08:08 AM Ja Son Complex Analysis 4 April 22nd, 2014 09:06 AM purpeil Complex Analysis 4 July 11th, 2013 12:57 PM deadsociety Algebra 2 January 21st, 2013 02:48 AM hanzel.michael Complex Analysis 2 March 12th, 2012 07:00 PM

 Contact - Home - Forums - Cryptocurrency Forum - Top