I did two main things with your code (pasted below):
- Added a lot of "dot''s to the line of code in your loop. When you have vectors, and you want to do operation on those vectors element-by-element, you need to add those dots, so that MATLAB does not think you want to do matrix operations (e.g. matrix multiply or matrix inverse).
- Added the line "e = exp(1)" to your code. MATLAB does not have "e" predefined. You could also have used the exp() function instead of your syntax.
You might want to read the "Getting Started" guide: http://www.mathworks.com/help/techdoc/learn_matlab/bqr_2pl.html
dXs = 1;
x = [-20,20];
SamplingScale = [1, dXs, 4, 20 ,40];
Range = SamplingScale;
HalfRange = Range/2;
Sigma = HalfRange/4;
SigmaSq = Sigma.^2;
e = exp(1);
for i = 1:length(x)
psi = (2./(sqrt(3)*Sigma)*pi^(-0.25)).*(1-(i^2./(Sigma.^2))).*(e.^(-i^2./(2*SigmaSq)));
end
plot (psi)
