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How to do subtraction operation with columns that are not the same size?

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Matheus Brito
Matheus Brito on 9 Jul 2019
Commented: Steven Lord on 9 Jul 2019
I need to know how to perform logical operations such as subtraction and addition between columns that do not have the same size.
For example, I have a column that will always have 60 rows.
However, the second column will change every time I try (49, 54 or 58).
How to perform this operation between these columns in matlab?

  1 Comment

Steven Lord
Steven Lord on 9 Jul 2019
By the standard definition of addition and subtraction, you cannot.
What would you expect, for example, the result of subtracting [1; 2; 3] from the vector [4; 5; 6; 7; 8] to be and why? To put it another way, what should x be in the code below?
x = yourSubtraction([4; 5; 6; 7; 8], [1; 2; 3])

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