Drexel dragonThe Math ForumDonate to the Math Forum



Search All of the Math Forum:

Views expressed in these public forums are not endorsed by Drexel University or The Math Forum.


Math Forum » Discussions » sci.math.* » sci.math.num-analysis.independent

Topic: non linear system, 6 unknowns, 6 equations (quadratic)
Replies: 5   Last Post: Jun 17, 2012 12:43 PM

Advanced Search

Back to Topic List Back to Topic List Jump to Tree View Jump to Tree View   Messages: [ Previous | Next ]
Robert H. Lewis

Posts: 281
Registered: 12/8/04
Re: non linear system, 6 unknowns, 6 equations (quadratic)
Posted: Jun 15, 2012 11:32 AM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

> Hi,
>
> x1, x2, x3 are fixed vectors of R^3
> a=(a1,a2,a3) and t=(t1,t2,t3) are two unknown vectors
> of R^3
> I is the 3,3 identity matrix
>
> Solve this system (the matrices in parenthesis are
> symmetric: only 6 eqns.):
> a1(x1*x1'-x1*t'-t*x1')+a2(x2*x2'-x2*t'-t*x2')+a3(x3*x3
> '-x3*t'-t*x3')=I
>
> Before trying to solve that numerically,
> any analytical result would be great
> (e.g., is there at least one solution ?).


I don't understand your notation. What is x1' ? t' ? Are your vectors to be thought of as column matrices? or what?

Robert H. Lewis
Fordham University



Point your RSS reader here for a feed of the latest messages in this topic.

[Privacy Policy] [Terms of Use]

© Drexel University 1994-2014. All Rights Reserved.
The Math Forum is a research and educational enterprise of the Drexel University School of Education.