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Topic: I have 51 linear equations, consisting of 51 unknowns. How to solve it in Matlab by using matrix?
Replies: 4   Last Post: May 28, 2013 10:45 AM

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J K

Posts: 13
Registered: 4/10/13
Re: I have 51 linear equations, consisting of 51 unknowns. How to solve it in Matlab by using matrix?
Posted: May 27, 2013 11:19 AM
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> What do you mean by "separate the equations"?

Let say I have 3 equations with 3 unknowns.
1x1 + 2x2 + 3x3 = 100
4x1+ 5x2 + 6x3 = 200
7x1 + 8x2 + 9x3 = 300

Normally in Matlab, you will do this command in order to solve x1,x2,x3

p=[1 2 3; 4 5 7; 7 8 9]'
q=[100 200 300]'
x=inv(p)*q

But let's say I don't want to use the method/way that I write. What other options that I have in order to solve for the 51 unknowns?



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