The Student Room Group

Complex number

20160715_205202[1].jpgThe answer i got for the proving was x^2-6x+y^2+8y=0. How will u guys do this and is the answer correct?Btw it question3.
(edited 7 years ago)
Reply 1
Original post by Akhito Kanbara
The answer i got for the proving was x^2-6x+y^2+8y=0. How will u guys do this and is the answer correct?


Could you show the question and your working please?
(edited 7 years ago)
[QUOTE=Akhito Kanbara;66432084]20160715_205202[1].jpgThe answer i got for the proving was x^2-6x+y^2+8y=0. How will u guys do this and is the answer correct?Btw it question3.

I got the same as you. I checked their answer, and the point (-1,7) is on the circle. However if z=-1+7i then w is not "totally" imaginary. Really don't like it how they used that word lol, almost like they are being sarcastic, and they may as well be. So their answer is incorrect.
(edited 7 years ago)
Thanks for telling.
Original post by Akhito Kanbara
20160715_205202[1].jpgThe answer i got for the proving was x^2-6x+y^2+8y=0. How will u guys do this and is the answer correct?Btw it question3.


yeah sorry the question had an error. it should read 8 instead of 8i.

thanks

Quick Reply

Latest