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You are not logged in. #1 20130725 09:42:02
Question on solving system of equations with constants...It's fairly straight forward to find information on how to solve a system of equations like this: #2 20130725 13:09:11
Re: Question on solving system of equations with constants...There is something simpler. If you insist on solving simultaneous sets of linear equations off course the answers will be very large. No cancelling can occur, no simplification. In mathematics, you don't understand things. You just get used to them. I have the result, but I do not yet know how to get it. All physicists, and a good many quite respectable mathematicians are contemptuous about proof. #3 20130725 17:39:14
Re: Question on solving system of equations with constants...hi datahead8888 where you need to know about matrix multiplication and also how to construct the inverse matrix, N Then ** All these methods will 'solve' the equations but you won't necessarily get x = ? y = ? and z = ? Sometimes a set of equations has no solution and it is even possible to get an infinite number of solutions. But the methods all have a way of showing when this is happening, so you have still got a solution even if it wasn't quite what you were expecting. Bob You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei #4 20130729 12:44:37
Re: Question on solving system of equations with constants...I found substitution to be a bit more confusing  I messed it up the last time I tried on paper.
I had understood that the simplex algorithm optimizes a function based on a series of constraints and graphically moves along to get to that optimum. To implement gaussian elimination with the simplex algorithm, would you get rid of the min / max function and then only use equality instead of inequalities for the constraints? I'm not an expert on the simplex algorithm but would like to know. #5 20130729 12:52:17
Re: Question on solving system of equations with constants...Cramers rule is a horror story. It grows factorially so a 4 x 4 would be awful. Take it over to Wolfram to do the calculations for you. I would not use matlab and or C++ for the job. Or bring them in here and I will do them for you. In mathematics, you don't understand things. You just get used to them. I have the result, but I do not yet know how to get it. All physicists, and a good many quite respectable mathematicians are contemptuous about proof. #6 20130729 15:16:17
Re: Question on solving system of equations with constants...
I meant that it worked well for the 3X3 matrix on paper. The 4X4 matrix was the one that sprawled onto several pages, like you said.
Could you explain a little more what you mean when you say it can be done using Gaussian elimination? #7 20130729 17:03:45
Re: Question on solving system of equations with constants...Is it a general 4 x 4? If so then why not solve it just once and then plug in from now on. In mathematics, you don't understand things. You just get used to them. I have the result, but I do not yet know how to get it. All physicists, and a good many quite respectable mathematicians are contemptuous about proof. 