If we have 2 column matrices A, B.
>>A = [10;20;30]
A =
10
20
30
>> B = [1;2;3]
B =
1
2
3
>> A+B
ans =
11
22
33
>> A*B
??? Error using ==> mtimes
Inner matrix dimensions must agree.
In order to perform "element-wise" operations, we have to use ".", so for multiplication ".*", division "./"
>> A.*B
ans =
10
40
90
>> A./B
ans =
10
10
10
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