# Sum question in Matlab

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ka kei yeung on 23 Apr 2020
Commented: ka kei yeung on 23 Apr 2020
i'm confusing of how to sum two different vector in matlab
Scuh as v1=[1 2]
v2= [3 4]
and i wanna got the output of 10 which mean sum those number together
function [Vectors] = sumVectors(v1, v2)
Vectors = v1+v2;
end
this is the code i have done so far

BALAJI KARTHEEK on 23 Apr 2020
Hii buddy,
There is something you want to know in matlab..
if u sum two vectors, it eventually results in to vector of individual sum of the elements. In your case v1+v2 results into a vector of [4 6], and if u want to sum all the elements in a vector use sum function. for example sum(v1) gives you the scalar value of 3 sum(v2) gives you the scalar value of 7. So you want to modify your code as Vectors=sum(v1)+sum(v2).
ka kei yeung on 23 Apr 2020
Oh my goddddd, that's the things I'm confusing. oh my god, thx for helping me figure it out.
cheers.

KSSV on 23 Apr 2020
v1 = [1 2] ;
v2 = [3 4] ;
% MEthod 1
v = [v1 v2] ;
iwant = sum(v) ;
% method 2
v = v1+v2 ;
iwant = sum(v) ;
ka kei yeung on 23 Apr 2020
i have tried that, seems like it's going to be work
but I got the value output of 1 2 3 4 when i'm using mt driver code to test the code
function [Vectors] = sumVectors(v1,v2)
Vectors = [v1 v2];
iwant = sum(Vectors);
end
and here my driver code
v1 = [1 2];
v2 = [3 4];
sum = sumVectors(v1,v2);
disp(sum)