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MATLAB Central > MATLAB Newsreader > Quadratic Cost Function x^T Q x 

Hello, 
"Jason" <jf203@ic.ac.uk> wrote in message <ht3lnt$92i$1@fred.mathworks.com>... 
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Subject: Quadratic Cost Function x^T Q x From: Roger Stafford Date: 20 May, 2010 18:44:05 Message: 5 of 39 
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Subject: Quadratic Cost Function x^T Q x From: Roger Stafford Date: 20 May, 2010 19:33:04 Message: 8 of 39 
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"Jason" <jf203@ic.ac.uk> wrote in message <ht4bq9$4t9$1@fred.mathworks.com>... 
> You mean x is a vector of homogeneous coordinates!?! 
I have given this some thought, I don't think polyfit is applicable for my purposes. 
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Subject: Quadratic Cost Function x^T Q x From: Bruno Luong Date: 21 May, 2010 05:55:22 Message: 17 of 39 
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Subject: Quadratic Cost Function x^T Q x From: Bruno Luong Date: 21 May, 2010 11:09:04 Message: 19 of 39 
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Subject: Quadratic Cost Function x^T Q x From: Bruno Luong Date: 21 May, 2010 11:23:05 Message: 20 of 39 
Well, actually I'm confused. The reason I think it's quadratic because I quote (from OP): 
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"Bruno Luong" <b.luong@fogale.findmycountry> wrote in message <ht5qeo$26u$1@fred.mathworks.com>... 
Subject: Quadratic Cost Function x^T Q x From: Bruno Luong Date: 21 May, 2010 12:24:04 Message: 23 of 39 
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Subject: Quadratic Cost Function x^T Q x From: Bruno Luong Date: 21 May, 2010 12:28:06 Message: 24 of 39 
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Subject: Quadratic Cost Function x^T Q x From: Bruno Luong Date: 21 May, 2010 12:40:20 Message: 25 of 39 
Sorry for the typo, *QUARTIC* and not QUADRIC 
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"Jason" <jf203@ic.ac.uk> wrote in message <ht9q4c$jbj$1@fred.mathworks.com>... 
I seem to have hit a brickwall, when I initially thought the problem was solved. 
"Jason" <jf203@ic.ac.uk> wrote in message <i225sp$gej$1@fred.mathworks.com>... 
"Matt J " <mattjacREMOVE@THISieee.spam> wrote in message <i22bs1$bsh$1@fred.mathworks.com>... 
No, you cannot approach the problem by combining all the Q{i} into one matrix. The problem as we've posed it is to minimize, 
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