matrix addition and substraction

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Chaudhary P Patel
Chaudhary P Patel 2022-1-31
评论： Chaudhary P Patel 2022-1-31
{a1; a2; 0}
i want to R1-R1 and R2+R1
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Chaudhary P Patel
Chaudhary P Patel 2022-1-31
Actually it is a 15X1 matrix of {a1;a2;0;a1;a2;0.....................;a1;a2;0}
so i want to do a1-a1 and a2+a1 for each set

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回答（1 个）

KSSV
KSSV 2022-1-31
编辑：KSSV 2022-1-31
@pramod kumar What ou ask is a very basic question. I would suggest you to take a basic introductory course in MATLAB.
https://www.youtube.com/watch?v=qGiKv3-02vw
https://in.mathworks.com/support/learn-with-matlab-tutorials.html
https://in.mathworks.com/help/matlab/getting-started-with-matlab.html
Your question is simple.
% random matrix for demo
a1 = rand(15,1) ;
a2 = rand(15,1) ;
% add
a = a1+a2 ;
% subtract
b = a1-a2 ;
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KSSV
KSSV 2022-1-31
This will throow error. It will not yun, as a is a scalar and you are trying to access it a svector.
Chaudhary P Patel
Chaudhary P Patel 2022-1-31
sir,
7.9710
7.9710
0
7.9710
7.9710
0
7.9710
7.9710
0
7.9710
7.9710
0
7.9710
7.9710
0
this is my column matrix and i have to 1,4,7,10,13 as zero by and 2, 5,8,11,14 row be Row2+row1, row5+row4, row8+row7, row11+row10, row14+row13.

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