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Overview of matrix multiplication

Overview of matrix multiplication - MATLAB Tutorial

From the course: MATLAB 2018 Essential Training

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Overview of matrix multiplication

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- [Instructor] The numbers in your vectors and matrices aren't just abstract concepts. They represent factors in an equation that reflects the results of the business process or model. If you want to increase all the values in a vector or matrix by a specific factor, either through addition, subtraction, multiplication, or division, you can do so quickly using scalar operations. You can also perform element-wise operations where you work with corresponding values in vectors and matrices that are the same shape. I'll start out by describing it in PowerPoint and then move over to MATLAB. So let's start by talking about scalar operations on matrices. We'll start with a two by three matrix, which is two rows and three columns. And let's say that we want to add the number three to each of those values, so we want to increase them by three. To do that, we just use the plus sign and a three, and when we press Enter, we get the result of four five six seven eight nine. All of the values on…

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