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Sergey15-Moonstone
15-Moonstone
Jan 15, 2026 2:00 PM UTC
Solved

Matrix multiplication

Hello!.

 

Please, help with the following issue:

 

I have defined two matrices and use them in equation where they are being multiplied. By some reason I get only one value instead of an array. If I define the one matrix ("k") as a variable, then the computation goes on, as it should, and I get an array. What I am doing wrong?

 

Sergey_0-1768485525998.png

Fred_KohlheppAnswer
23-Emerald I
Jan 15, 2026 2:14 PM UTC

Vector times vector creates dot product.  You need to "vectorize"

Fred_Kohlhepp_0-1768486364062.png

Fred_Kohlhepp_1-1768486439843.png

 

 

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2 replies

Fred_Kohlhepp23-Emerald IAnswer
23-Emerald I
Jan 15, 2026 2:14 PM UTC

Vector times vector creates dot product.  You need to "vectorize"

Fred_Kohlhepp_0-1768486364062.png

Fred_Kohlhepp_1-1768486439843.png

 

 

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    Sergey15-MoonstoneAuthor
    15-Moonstone
    Jan 15, 2026 2:50 PM UTC

    Thank you. I keep forgeting that mathcad computing it as the dot product.

     

     

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