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October 18th, 2010, 03:13 PM  #1 
Member Joined: Apr 2010 Posts: 91 Thanks: 0  Finding real number in complex number
Find real numbers x, y such that I dont know what to do. 
October 18th, 2010, 05:38 PM  #2  
Global Moderator Joined: Nov 2009 From: Northwest Arkansas Posts: 2,766 Thanks: 4  Re: Finding real number in complex number Quote:
x 3x*i + 2y + 5y*i = 2i Group real and imaginary parts (x + 2y) + (3x + 5y)i = 0 + 2i. Notice that I added the "0" on the right side. The real part on the left is x + 2y. We equate that to the real part on the right side = 0 So x + 2y = 0. Similarly, we equate imaginary parts. 3x + 5y = 2 Solve the system of equations!  

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complex, finding, number, real 
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