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Could anyone help me how to multiply the second and third element of the row in a matrix by an value of 2 and 3.

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jaah navi
jaah navi 2020-2-21
关闭： MATLAB Answer Bot 2021-8-20
I am having the matrix A=[ 2 3 4]
I want to multiply the second element by 2 and third element by 3.
could anyone please help me on this.

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回答（1 个）

Sindar
Sindar 2020-2-21
A=[ 2 3 4];
A(2) = A(2)*2;
A(3) = A(3)*3;
More generally, you can use elementwise multiplication:
A=[ 2 3 4 5 6 7 8];
A = A.*[1:7];
Also, this is a great resource for starting out in Matlab: https://www.mathworks.com/company/newsletters/articles/matrix-indexing-in-matlab.html

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