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??? Undefined function or method 'erfc' for
input arguments of type 'double' and attributes
'full scalar complex'.

Error in ==> normcdf at 68
p = 0.5 * erfc(-z ./ sqrt(2));

Error in ==> a1 at 42
y2=normcdf(-m/M2)-((1/6)*M3/(M2^3))*d2n...
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