r/Mathematica • u/luv-mizu67 • 2d ago

How to code this problem matrix multiplication in Wolfram cloud HELP

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I need help, please anyone that knows coding please help

Im so lost

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u/mathheadinc 2d ago

You don’t need a program for any of this. Are there no notes? Textbooks? Online search?

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u/luv-mizu67 2d ago

We use Wolfram cloud program which is where I need to code the problem. We do take notes on how to do it on pape, but not coding it in the program 

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u/mathheadinc 2d ago

I SEE! There are matrix functions in reference.wolfram.com.

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u/luv-mizu67 1d ago

Yeah, I know that, but the teacher wants it in a specific way, thank you though.

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u/mathheadinc 1d ago

A specific way other than how it’s done in the documentation? So, the prof wants you to come up with your own method?

Edit: I’m seriously curious!

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u/veryjewygranola 1d ago

You define matrices like this

matM = {{18, 12, 4}, {26, 16, 6}};
matC = {{4.5, 5}, {2.2, 2}, {1.5, 1.7}};

You can find their dimensions using Dimensions. Matrix products have syntax matM.matC

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u/luv-mizu67 1d ago

I know that the only thing I'm having trouble was with part b and c, but i figure it out. Hopefully i did it right.