How do you put the function y=xcos(X+0.2) into MATLAB? We need to put in to find x=-4 and x=4 to find the local minimums. We are using an example from a textbook.

>> func _ _y = x.*cos (x+0.3) Undefined function or variable 'func'.

Answer 1

[John D'Errico]

You were close.

func = @(x) x.*cos(x +0.2);

[Walter Roberson]

y = @(x) x.*cos(x +0.2);