Problem 69
Question
Describe how to subtract matrices.
Step-by-Step Solution
Verified Answer
Matrices need to be the same size to subtract them. Subtract the corresponding entries of the matrices once they have been lined up. This is done entrywise.
1Step 1: Check Matrix Sizes
First, confirm that the matrices to be subtracted are of the same size. This means they should have the same number of rows and the same number of columns. If they are not of the same size, you cannot subtract them.
2Step 2: Line up the Matrices
The second step is to line up the matrices. This helps ensure that the corresponding entries are clear and helps avoid mistakes during subtraction.
3Step 3: Perform the Subtraction
For the third step, subtract the corresponding entries in the matrices. This means you subtract the entry in the first row and first column of the first matrix from the entry in the first row and first column of the second matrix. This action is repeated for all entries.
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