I tried using the .. command in MATLAB to generate Laguerre polynomials but I keep getting this error every time:
In R2014b+, there is a laguerreL function available directly from within Matlab. However, a version of this function was introduced to MuPAD in R2009a. You can call the MuPAD version from within Matlab
syms x;
feval(symengine,'laguerreL',2,x)
or
evalin(symengine,'laguerreL(2,x)')
Both return x^2/2 - 2*x + 1.
You can read more about interacting with MuPAD functionality from Matlab here. However, I'd recommend browsing and searching the archived documentation for your specific version or using your built-in HTML documentation (e.g., doc mupad or doc 'calling mupad').