How to find the sum of each element in a vector in MATLAB For example, I want to calculate the sum of each element of a = [1 2 3 4 5], how to use matlab to achieve

How to find the sum of each element in a vector in MATLAB For example, I want to calculate the sum of each element of a = [1 2 3 4 5], how to use matlab to achieve

In fact, it's very simple. Just use the command sum
That's all you have to do: sum (a) enter
Let me tell you some simple commands. Mean average diff differential round. If you have any problems, please send me email [email protected]

Extraction of elements in MATLAB vector
How to program in MATLAB to extract the number that meets the requirements in the limit and form a new vector. For example: a = [- 4 - 3 3 4 5 6], put forward the term with absolute value greater than three to form a new vector B
B = [- 4456], I can only make the simple choice of B = [- 400456]
DemonHunter 500 - level 5
You determined n in the front, but did the for loop expand N again, and the result is 0 000 - 4 456
Is the result a 7-number vector or a 4-number vector? Or maybe I don't have a clear idea,

n=0;
for i=1:6
if abs(A(i))>3
n=n+1;
end
end
B=zeros(1,n);
for i=1:6
if abs(A(i))>3
B(n)=A(i);
n=n+1;
end
end