مدرس المادة
Basic Matrix Functions:-
magic(n)
returns an n-by-n matrix constructed from the integers 1 through n^2 with
equal row and column sums. The order n must be a scalar greater than or
equal to 3.
>> M = magic(3)
M =
8 1 6
3 5 7
4 9 2
Sum(A)
>>A=[1 2 3
4 5 6];
If A is a vector, sum(A) returns the sum of the elements.
If A is a matrix, sum(A) treats the columns of A as vectors, returning a row
vector of the sums of each column.
>>sum(A)
Ans=
5 7 9
A=[1 2
3 4
5 6];
>> sum(A)
ans = 9 12
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