Undefined function for 'regression'?

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Sam
Sam 2015-1-13
回答： Alan Weiss 2015-1-13
Undefined function 'regression' for input arguments of type 'double'.
Error in frequentieanalyse (line 44) [r,m,b]=regression(abscis(3:end-3),mpf(3:end-3));
Is there a toolbox I should install or something?

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Alan Weiss
Alan Weiss 2015-1-13
The regression function is from Neural Network Toolbox.
Alan Weiss
MATLAB mathematical toolbox documentation

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