# Mmult function in excel mac

Jun 16, PM.

Can you post a screenshot of the table where metric multiplication is utilized? It would help in trying to post a response for your situation.

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Care to share how you did the matrix multiplication? I would be helpful to your fellow users here.

• Excel MMULT Function;
• Function Description?
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Can't find previous on this. What I did was in no way a general solution, and was basically giving up and brute-forcing the solution for my spreadsheet It only took a few minutes, after all. I had two groups of data which could be thought of as arrays. One was a column a single cell wide; the other was ten columns wide and of indefinite height.

I set up an area of the spreadsheet to hold the intermediate values, then entered the formula for the first cell of the intermediate array.

## MMULT function

After that a lot of copying ensued. The final result involved summing the columns of the intermediate array and multiplying each by a value which might be different for each. Thus if for instance matrix A is block of cells C1:F10 10 rows, 4 columns and matrix B is G1:P4 4 rows, 10 columns and result matrix is block CF21 10 rows, 10 columns with.

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So all my demonstration proves wrong, though correct mathematically. If for instance matrix A is block of cells C1:F10 10 rows, 4 columns and transposed of matrix B is G1:J10 4 rows, 10 columns and result matrix is block CF20 10 rows, 10 columns with. If for instance matrix A is block of cells C1:F10 10 rows, 4 columns and matrix B is G1:P4 4 rows, 10 columns and result matrix is block CL20 10 rows, 10 columns with. Finally with rows and colums preserved as above, pasting formula of cell C11 to block of cells CL20 gives the result.

So, generalizing, matrix multiplication in Numbers can often be accomplished by something like this:. Question: Q: Matrix Multiplication? More Less. Communities Contact Support.

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