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rdliquid1-Visitor
1-Visitor
September 1, 2020
Question

symbolic factor

  • September 1, 2020
  • 2 replies
  • 1568 views

How to factor out the similar powers terms in Mathcad 6.0? Please see attached for a better explanation

 

Thanks a lot for the helps

rdliquid

    2 replies

    W
    Werner_E25-Diamond I
    25-Diamond I
    September 1, 2020

    The possibilities to influence the type of output of a symbolic transformation are unfortunately very limited.
    I am afraid that you will not be able to achieve the type of representation you want.

    L
    LucMeekes23-Emerald IV
    23-Emerald IV
    September 2, 2020

     You may want to try the symbolic keyword collect, if that still exists in Prime 6. Example:

    LucMeekes_1-1599030671222.png

    And to get the coefficients of all powers of s in vector form, try coeffs.

    LucMeekes_0-1599030985112.png

     

    Success!

    Luc

    W
    Werner_E25-Diamond I
    25-Diamond I
    September 2, 2020

    Unfortunately using the original "G" from the provided sheet, both "collect" and "coeffs" return expressions too large to display.

    At least with "coeffs" a workaround could be to assign the result to a variable and evaluate the elements of the vector singly:

    Werner_E_0-1599034395638.png

     

    R
    rdliquid1-VisitorAuthor
    1-Visitor
    September 2, 2020

    Hi Luc,

     

    Thanks for the helps. Looks like your version of Mathcad did it. It is able to factor out the terms. As Werner mentioned, using Collect and Coeffs in Mathcad 6.0 results in the expressions that are too high entropy and it is hard to understand what it means. Please see attached

     

    What Mathcad version are you using Luc?

     

    I am checking with Mathcad support on this and hope they have a solution. 

     

    The attachment is just a simple expression right now. My actual equation is much more complicate and it would be a nightmare if I have to do it manually

     

    Thanks for all the helps

    Dat N

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