Im trying to write the fitness function for my timetabling project. however, it keeps giving me an error saying _"Undefined function or variable 'x1'.
Error in my_fun (line 5) y = w1*x1 + w2*x2 + w3*x3;"_
May i ask for help how to correct this error? Its a really simple code. Im still trying the most basic and experimenting on how to make it work. Please advice. the piece of code is as follows.
function y = my_fun(x)w1 = 0.8;w2 = 0.8;w3 = 0.8;y = w1*x1 + w2*x2 + w3*x3;
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