add two matrix

hello,
I'd like be able to add, row by row, the values of two simple matrix
A(8760,1) and B(8760,1) to obtain one matrix C(8760,1).
Presently I use

for i=1:8760
C = A(i,1)+B(i,1)
end

or in another exemple:

for i=1:8760
P = (max(0.00001,Q(i,1)*expert(1,4)))-R(i,1);
end

but this way of making the calculations, with For loops is very slow,
Are there other faster ways to do it???
Thanks you for your help
max
.

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