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Matrix 1 2 3 4.
A matrix c 1 3 2 4 nrow 2 the nrow 2 command tells r that the matrix has 2 rows then r can compute the number of columns by dividing the length of the vector by nrow.
For example the dimension of the matrix below is 2 3 read two by three because there are two rows and three columns.
We can only multiply matrices if the number of columns in the first matrix is the same as the number of rows in the second matrix.
To create this matrix.
So first we list the entries column by column to get the matrix as follows.
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A multiplying a 2 3 matrix by a 3 4 matrix is possible and it gives a 2 4 matrix as the answer.
If the matrices are the same size matrix addition is performed by adding the corresponding elements in the matrices.
In mathematics a matrix plural matrices is a rectangular array or table see irregular matrix of numbers symbols or expressions arranged in rows and columns.
Provided that they have the same size each matrix has the same number of rows and the same.
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You cannot add a 2 3 and a 3 2 matrix a 4 4 and a 3 3 etc.