syms c1 c2
S=50;
r=15;
mu=5;
sigma=2;
L=3;
m=5;
mu_ccLm=(c1+c2+(2*L)-m)*mu
sigma_ccLm=((c1+c2+(2*L)-m)^0.5)*sigma
mm=normcdf(S-r,mu_ccLm,sigma_ccLm)
That is the error message I expect for this situation.
There is no special symbolic normcdf() call, so your parameters are being processed by the normal numeric normcdf() call. Several of the statistics-related functions test input parameters numerically in order, such as if they want to have logic similar to
if sigma > 0
do the normal calculation
else
output 0, or nan, or as appropriate
end
There is not much you can do about this, other than to copy the implementing code for normcdf and editing out the numeric tests.
