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I have a practice problem that I need explained an answered, thank you

I have a practice problem that I need explained an answered, thank you-example-1
User Al Mahdi
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1 Answer

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From the question, we are given the matrices

We are to find which operation is defined and whic one is not

For the operation


M-N

For subtraction operation to be definded

The order of the matrices must be the same

Since the order of M is 4 x 2

And the order of N is 4 x 2

Therefore, the operation M - N is defined

For the operation


L-N

Similarly, for the operation to be definded

The order of the matrices must be the same

The oder of matrix L is 2 x 2 while the order of matrix N is 4 x 2

Since the oder of the matrices are not the same then

The operation L - N is not defined

For the operation


M+P

For addition operation to be defined, the Order of the matrices must be the same

The order of matrix M is 4 x 2 while the order of matrix P is 2 x 2

Since the order of the matrices are not the same then the operation is not defined

For the operation


Q+P

For addition operation to be defined, the Order of the matrices must be the same

The order of matrix Q is 2 x 1 while the order of matrix P is 2 x 2

Since the order of the matrices are not the same then the operation is not defined

User Udi Reshef
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