getting error while trying to write a code to solve general case diagonal Ax=b matrix
显示 更早的评论
I am trying to write code for solve Ax=b
function [x]=solveDiag(A,b,n)
%A = nxn diagonal matrix
%b=1x3 column vector
%n=number of unknowns in diagonal
for i=1,2,...,n do
x(i)=b(i)/A(i,i);
fprintf('%d',x(i,:))
end
end
采纳的回答
John D'Errico
2020-1-26
You should probably read the getting started tutorials, since you are using syntax that does not do what you think it does in MATLAB. For example, this is NOT how you define a for loop:
for i=1,2,...,n do
Sorry, but not so. As I said, reading the manual is important, since different languages use sometimrs subtly different forms.
In MATLAB, write it like this:
for i=1:n
Next, what does your function return as outputs? A and b. Should you be surprised that it returns A as it was defined?
Worse, you are calling the function with arguments A and b, at least in theory, but then you just define A and b inside the function. I think you think that A and b need to be dclared somehow. They don't.
3 个评论
CS
2020-1-26
Yes,
for i=1,2,...n
dosomething
end
works, if by works you mean it doesn't error. It certainly doesn't do what is expected. In matlab the comma is a separator for statements, pretty much equivalent to a new line and the ... is a comment indicator with the rest of the code on the next line, so the above is equivalent to:
for i = 1 %doesn't really work as a loop, since it only goes through 1
2 %print 2 at the command line
%...n %just a comment
dosomething
end
CS
2020-1-27
更多回答（0 个）
类别
在 帮助中心 和 File Exchange 中查找有关 Creating and Concatenating Matrices 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
