problem in functin (y for x)
1 view (last 30 days)
Show older comments
Hy i have a problem in the flowing code (XZData.m function)
function [x,y] = XZData(A,B,C)
x = 0:1:10;
y = (A*x^2)+(B*x)+C;
XY = ['XData', num2str(x), 'yData', num2str(y)];
disp(XY)
0 Comments
Accepted Answer
Star Strider
on 1 Mar 2017
Edited: Stephen23
on 1 Mar 2017
Use element-wise exponentiation in the ‘y’ assignment:
y = (A*x.^2)+(B*x)+C;
↑ ← INSERT ‘.’ HERE
function [x,y] = XZData(A,B,C)
x = 0:1:10;
y = (A*x.^2)+(B*x)+C;
XY = ['XData ', num2str(x), ' yData ', num2str(y)];
disp(XY)
end
0 Comments
More Answers (2)
John D'Errico
on 1 Mar 2017
Edited: John D'Errico
on 1 Mar 2017
It makes it easier to get help if you report the (COMPLETE) error message that you got. Help those who would help you.
In this case though, the problem is that you need to learn about the elementwise operators, like .* ./ and .^ , since that is where your immediate problem arises.
Change the computation of y to this:
y = (A*x.^2)+(B*x)+C;
x is a vector. You wish to compute the square of each element of x, so use the .^ operator.
Admittedly, I think your next problem is that you won't like how that line gets displayed in the call to disp. It will be one long line of text. But that is for you to decide.
0 Comments
See Also
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!