how to add two matrix

2014 10 18
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更新时间：2020 5 31
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hi guys i

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Intisar Mohammed
Intisar Mohammed 2020-5-31
Addition of two square matrices 𝐴 𝑎𝑛𝑑 𝐵 of same order.

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Roger Stafford
Roger Stafford 2014-10-18

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Let 'a' and 'b' be two row vectors. To add zeros to the left side of the shorter one so as to have equal lengths do this:
na = length(a);
nb = length(b);
n = max(na,nb);
a2 = [zeros(1,n-na),a];
b2 = [zeros(1,n-nb),b];

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janny
janny 2014-10-18
how to make it run for two matrix with 10 or more vectors? i try it it didn't work for matrix.
Roger Stafford
Roger Stafford 2014-10-18
编辑：Roger Stafford 2014-10-18
Let 'a' and 'b' be two matrices with the same number of rows, m.
na = size(a,2);
nb = size(b,2);
n = max(na,nb);
a2 = [zeros(m,n-na),a];
b2 = [zeros(m,n-nb),b];
(It should be obvious how to also deal with matrices with both differing numbers of columns and differing numbers of rows.)
janny
janny 2014-10-18
it works very fine.. thanks a lot
Image Analyst
Image Analyst 2014-10-18
Can you go ahead and officially "Accept" his answer and also "vote" for it to give him credit/reputation points for it? Thanks in advance.

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