how do i get values of ratios instead of the 0 matlab gives me?
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how do i get values of ratios instead of the 0 matlab gives me?
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Star Strider
2016 年 12 月 16 日
We need to know what you are doing.
See if format long (or other format options) changes the result.
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Star Strider
2016 年 12 月 19 日
With this code:
format short g
A=[1 -1 -1 1 ;2 0 2 0;0 -1 -2 0;3 -3 -2 4];
b=[0;8;-8;7];
n=length(b)
x=zeros(n,1)
x(n) = b(n)/A(n,n)
I get:
x =
0
0
0
1.75
as the final result.
If you want to do the division on your entire vector and matrix, this assignment:
x_mtx = bsxfun(@rdivide, b, A)
gives you this result:
x_mtx =
0 0 0 0
4 Inf 4 Inf
-Inf 8 4 -Inf
2.3333 -2.3333 -3.5 1.75
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