How to divide a matrix by certain numbers?
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I want to divide a matrix by a column vector in this way:
(4 2 3 8;7 9 1 5;6 4 8 3) / (4;8;2)
and then the result i want to get is:
(4/4 2/4 3/4 8/4;7/8 9/8 1/8 5/8;6/2 4/2 8/2 3/2)
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Accepted Answer
Star Strider
on 23 Sep 2015
Try this:
A = [4 2 3 8;7 9 1 5;6 4 8 3];
B = [4;8;2];
format rat
Q = bsxfun(@rdivide, A, B)
Q =
1 1/2 3/4 2
7/8 9/8 1/8 5/8
3 2 4 3/2
2 Comments
Star Strider
on 23 Sep 2015
The format rat sets the format in the Command Window to rational fraction approximation, since I thought that is what you wanted. (See the documentation on format for a full description of that and other options.) This just affects the Command Window output, and full double-precision representation is maintained internally.
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