We are given that,
We need to find the value of A + AT.
We know that the transpose of a matrix is a new matrix whose rows are the columns of the original.
1st row of A = (1 2)
2nd row of A = (3 4)
Transpose of this matrix A, AT will be given as
1st column of AT = 1st row of A = (1 2)
2nd column of AT = 2nd row of A = (3 4)
For addition of two matrices, say X and Y, where
Add the corresponding elements of matrices X and Y.
Similarly, we need to add these two matrices, A and AT.
Adding the corresponding elements of the matrices A and AT,
Thus, we get the matrix .
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