Yes, you need . in other places. Basically, to do element-wise operations you need to look for all of the x's in your equation and make sure the surrounding operations are element-wise. E.g., this
la/x.^2
should be
la./x.^2
And this
... )*( ...
should be
... ).*( ...
And this
(x-mu1)^2
should be
(x-mu1).^2
etc.
Also you have a typo. This
A(...
should be
A*(...
You might also double check to see if you want x.^12 or x.^2 in the equations.
