Matrices - Dimensions, Add, Subtract Scalar Multiplication

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An introduction to Matrices in this free math video tutorial by Mario's Math Tutoring. We discuss the dimensions of matrices, how to add, subtract and do scalar multiplication.

0:42 How to Identify a Matrix
0:58 What is the Element of a Matrix
1:17 How to Find the Dimensions of a Matrix
1:44 How to Identify the Element of a Matrix
2:24 What is a Square Matrix
2:33 How to Add or Subtract Matrices
3:04 Example 1 Adding 2 Matrices Together
3:52 Example 2 How to Do Scalar Multiplication

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i question
matrix 2bc
B |-1 4 2 3| C= | -1 -2 -3|
| -2 2 -2|
|-3 3 -4 |
|-4 6 -3 |
how to solve

israrahmad
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Good intro, helps you remember the basics.... But you didn't point out things such as not writing decimals as an answer, instead you'd leave it as a fraction.

EnsignLovell