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# Operations On Matrices

## How it works:

❶Watch this video lesson to learn how easy it is to perform row operations on a matrix.

Further, the elements should be so arranged that each of them is capable of being subscripted by its i th row and j th column to locate its position in the matrix. Thus, if an element say, 15 is subscripted as 15 1. In a disorderly arrangement of numbers like the above ones a number cannot be subscripted by its i th row and j th column. A matrix always consists of certain rows and columns in which all its elements are arranged.

The number of such rows and columns may be one or more and there may or may not be equality between the number of rows and the number of columns.

But a columns or a row must be complete with some elements. Thus a group of rows and columns not completed with all its elements as follows will not amount to a matrix:. A group of orderly arranged numbers or symbols to be called a matrix must be enclosed by some brackets viz. Thus, a groups of following numbers and symbols not encompassed by any bracket will not constitute a matrix. The magnitude of the order of a matrix refers to the number of rows and column with which a matrix is constituted.

Every matrix must be denominated properly for making a reference to it in the course of computational works. Conventionally, all the matrices are denominated or named by some letters of upper case viz. The answer goes in position 2, 1.

Finally, we multiply 2nd row of the first matrix and the 2st column of the second matrix. The answer goes in position 2, 2. I designed this web site and wrote all the lessons, formulas and calculators. If you want to contact me, probably have some question write me using the contact form or email me on.

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## Main Topics

Operation with Matrices in Linear Algebra. Addition and Multiplication.

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