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Generate useful matrices

Generate useful matrices - Mathematica Tutorial

From the course: Mathematica 11 Essential Training

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Generate useful matrices

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- [Instructor] For some machine learning and other applications, you'll find it useful to create specific matrices. For example, a matrix that contains only the number zero, another that contains only the number one, or a matrix that has the number one from the top left to the bottom right diagonal in a square matrix. In this movie, I will show you how to create each of those matrices in Mathematica. I have created a blank Mathematica notebook, and I can run through the commands of creating the three different types of matrices that I described. The first is a matrix that consists entirely of ones. To create that, I need to use the constant array keyword. So I'll type ConstantArray. The A at the beginning of array is capitalized. Now enter a left square bracket to start my argument list. I want the constant in the array to be the number one; so I'll type one, then a comma. Now I need to enter in a list to identify the dimensions of the matrix, that is the number of rows and columns…

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