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KV_92984983-Newcomer
3-Newcomer
Dec 6, 2023 1:22 AM UTC
Question

Mathcad matrix problem

Hi!

I'm a college student having problems with the creation of the matrix. The informational failure is "Found a similarity while evaluating this expression. You may be dividing by 0 or inverting a similar matrix."

KV_9298498_0-1701825394773.png

KV_9298498_1-1701825438732.png

Please help! 

3 replies

MartinHanak24-Ruby III
24-Ruby III
Dec 6, 2023 6:40 PM UTC

Hi,

please attach Mathcad file.

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    KV_92984983-NewcomerAuthor
    3-Newcomer
    Dec 7, 2023 12:28 PM UTC

    File attached

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    LucMeekes23-Emerald V
    23-Emerald V
    Feb 9, 2024 3:33 PM UTC

    Your value Q7 is 0. in hd(Q)  you have Q7^-0.5, which means 1/sqrt(Q7).

    well, if Q7=0, its square root is 0, and you're dividing by 0.

     

    Success!
    Luc

     

    P.S.

    To locate such errors, select the expression with the red error, then from the menu, in the Calculation tab use the error tracing arrows

    LucMeekes_0-1707493020207.png

    to backtrack to the origin.

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