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rskibba1-Visitor
1-Visitor
October 4, 2016
Solved

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?

-MFra-Answer
21-Topaz II
October 4, 2016

...something is missing...

namely, the vector of known terms B.

sys1.jpg

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9 replies

MJG1-Visitor
1-Visitor
October 4, 2016

Here's one way to solve:

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

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    rskibba1-VisitorAuthor
    1-Visitor
    October 4, 2016

    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.

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    MJG1-Visitor
    1-Visitor
    October 5, 2016

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

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    -MFra-21-Topaz IIAnswer
    21-Topaz II
    October 4, 2016

    ...something is missing...

    namely, the vector of known terms B.

    sys1.jpg

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      rskibba1-VisitorAuthor
      1-Visitor
      October 4, 2016

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

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      MJG1-Visitor
      1-Visitor
      October 5, 2016

      Can B be all zeros?

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

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      ValeryOchkov24-Ruby IV
      24-Ruby IV
      October 4, 2016

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