exp function no longer working.

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Jason
Jason 2020-1-27
评论： Jason 2020-1-27
Hello, I'm suddenly getting an error plotting a Gaussian function through the exp command:
fitGaus = a*exp(-0.5*((xdataFine-b)/c).^2)+d;
The only thing I have done is add all my matlab programs ever created to the path using the add path tool (2019b0
unrecognised function or variable 'exp'
I have checked the exp function:
>> which exp
built-in (C:\Program Files\MATLAB\R2019b\toolbox\matlab\elfun\@double\exp) % double method
and opening this gives:
%EXP Exponential.
% EXP(X) is the exponential of the elements of X, e to the X.
% For complex Z=X+i*Y, EXP(Z) = EXP(X)*(COS(Y)+i*SIN(Y)).
%
% See also EXPM1, LOG, LOG10, EXPM, EXPINT.
% Copyright 1984-2005 The MathWorks, Inc.
% Built-in function.
Is it possible I have another exp somewhere and if so how can i reset it?
Thnaks
Jason

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