Master Upper, Lower Triangular & Diagonal Matrices in 4 Minutes 🚀

Upper triangular, lower triangular, and diagonal matrix quick definitions in under four minutes.

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0:00 Main Diagonal Definitions
0:19 Upper Triangular Matrix Definitions
0:37 Lower Triangular Matrix Definitions
0:57 Upper and Lower terms relationship with nonzero entries
1:21 Diagonal Matrix Definitions
1:40 Walkthrough classifying example matrix
2:14 Practice Classifying Four Examples
3:34 Is the null matrix an upper, lower or diagonal matrix?

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