How to Use the Excel MMULT Function for Matrix Operations

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Dive deep into the world of Excel with our comprehensive tutorial on matrix multiplication and array formulas! This video is a continuation of a previous lecture, focusing on a practical application of these advanced Excel techniques.

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In this video I introduce Excel's Matrix Multiplication formula - the MMULT function. In simple steps I explain how you can use MMULT to solve complex problems.

🔑 Key Highlights:

Matrix Multiplication Explained: Grasp the fundamentals of matrix multiplication and how to apply it in Excel.
Step-by-Step Guide: Follow a detailed walkthrough from setting up matrices to executing complex array formulas.
Comparing Techniques: Learn the differences and applications of SUMPRODUCT, MMULT, and other array functions in real-world scenarios.
Dynamic Formula Creation: Discover how to make your formulas dynamic and adaptable to changes in data.

Visit Part 1 here: https://youtu.be/Nfu0fvbnccU
And Part 3 here: https://youtu.be/qd8vyLcpogw

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In this example I use the MMULT formula to get the number of rows (workshops in this case) that contain at least one of the criteria (companies in this case). The analysis involves multiple criteria with an OR condition.

I first explain the basics and the rules you need to follow to use the MMULT formula correctly. If you don't, you formula result will be #value. I then use the SUMPRODUCT, together with MMULT to get unique count by rows. To make it more dynamic, I use the COLUMN function together with TRANSPOSE.

In the last video, I showed you how you can use helper cells first and then how to combine SUMPRODUCT with FREQUENCY function to get a one formula array solution.

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Видео How to Use the Excel MMULT Function for Matrix Operations канала Leila Gharani