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2-Guest

## How to solve a linear system symbolically?

I have the attached linear system.  I want to solve for X1, X2, and X3 symbolically. three equations three unknowns, however the coefficients are unknown. Is this possible in MathCAD?

1 ACCEPTED SOLUTION

Accepted Solutions
21-Topaz II
(To:rskibba)

...something is missing...

namely, the vector of known terms B.

9 REPLIES 9
18-Opal
(To:rskibba)

Here's one way to solve:

However, I'm guessing you wanted a solution other than X1=X2=X3=0

2-Guest
(To:MJG)

Thank you for your solution. yes, I am wanting to get X1, X2, xnad X3 in terms of a...f.  It can be solved by hand as a simultaneous equation.  It is tedious.

18-Opal
(To:rskibba)

Have you solved this one by hand?  If so, can you share?

21-Topaz II
(To:rskibba)

...something is missing...

namely, the vector of known terms B.

2-Guest
(To:-MFra-)

Your solution just popped up. Yes, this is what I am looking for?  Can B be all zeros?

18-Opal
(To:rskibba)
 Can B be all zeros?

Yes, but then you end up with the solution X1=X2=X3=0

2-Guest
(To:MJG)

Agreed

21-Topaz II
(To:-MFra-)

The worksheet

24-Ruby III
(To:rskibba)

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