June 6th, 2016, 10:52 AM  #1 
Newbie Joined: Jun 2016 From: São Gonçalo do Amarante , Ceará, Brazil. Posts: 3 Thanks: 0  Ciecunferência  Circumference
Given the equation x ^ 2 + by ^ 2 = c, where a, b and c are real not nulls, it is true that its graphical representation is: a) circumference, if a = b b) hipérbol, if a = b and c = b c) the center of the ellipse at the origin, the 3 # b and c = 1 d) circumference, if a = c and b> 0 Desde já , obrigado! Last edited by futuromilitar; June 6th, 2016 at 10:53 AM. Reason: title Circunferência 
June 6th, 2016, 01:00 PM  #2  
Math Team Joined: Jul 2011 From: Texas Posts: 2,751 Thanks: 1401  Quote:
by "circumference", do you mean a circle?  
June 6th, 2016, 01:17 PM  #3  
Newbie Joined: Jun 2016 From: São Gonçalo do Amarante , Ceará, Brazil. Posts: 3 Thanks: 0  Quote:
Last edited by futuromilitar; June 6th, 2016 at 01:53 PM.  
June 6th, 2016, 04:17 PM  #4 
Math Team Joined: Jul 2011 From: Texas Posts: 2,751 Thanks: 1401  So? You didn't answer my questions ... Also, is this multiple choice? Last edited by skeeter; June 6th, 2016 at 04:30 PM. 
June 6th, 2016, 07:48 PM  #5 
Senior Member Joined: Dec 2012 From: Hong Kong Posts: 853 Thanks: 311 Math Focus: Stochastic processes, statistical inference, data mining, computational linguistics  

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ciecunferência, circumference, circunference 
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