how do i get values of ratios instead of the 0 matlab gives me?

1 次查看（过去 30 天）

显示更早的评论

Raymond Kazibwe 2016-12-16

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/317201-how-do-i-get-values-of-ratios-instead-of-the-0-matlab-gives-me

评论： Star Strider 2016-12-19

采纳的回答： Star Strider

how do i get values of ratios instead of the 0 matlab gives me?

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Star Strider 2016-12-16

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/317201-how-do-i-get-values-of-ratios-instead-of-the-0-matlab-gives-me#answer_247525

We need to know what you are doing.

See if format long (or other format options) changes the result.

2 个评论
显示无隐藏无

Raymond Kazibwe 2016-12-19

format long does not change anything!Here's the program below close all;clc; format short 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)

Star Strider 2016-12-19

在 MATLAB Online 中打开

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:

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

请先登录，再进行评论。

更多回答（0 个）

请先登录，再回答此问题。

类别

AI and Statistics Deep Learning Toolbox Train Deep Neural Networks Function Approximation, Clustering, and Control Function Approximation and Clustering Pattern Recognition

在 Help Center 和 File Exchange 中查找有关 Pattern Recognition 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Translated by