Geometry Geometry Math Forum

 April 28th, 2011, 11:12 PM #1 Newbie   Joined: Apr 2011 Posts: 2 Thanks: 0 Advanced geometry given the cartesian equation $Ax^2+ Bxy+ Cy^2+ Dx + Ey= 0$ The equation represent the general conic through the origin, Show that the center of the conic is (h,k) = -1/2 Q^-1 (D,E) where Q is matrix with entries (A, 1/2 B , 1/2 B, C)
 April 29th, 2011, 10:16 PM #2 Senior Member   Joined: Jun 2010 Posts: 618 Thanks: 0 Re: Advanced geometry May, It might be a good first step to eliminate the linear terms and perform other cosmetic procedures, in other words, put the conic into standard form. -Ormkärr-
 April 30th, 2011, 08:50 PM #3 Newbie   Joined: Apr 2011 Posts: 2 Thanks: 0 Re: Advanced geometry Can you explain further, I appreciate your help if you can. thank you.
 April 30th, 2011, 08:57 PM #4 Senior Member   Joined: Apr 2007 Posts: 2,140 Thanks: 0

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