[R] optim function multi variables -newbie

[michalseneca]

I tried to modify the code,thanks for noticing...now i get that the function
cannot be evaluated at initial parameters.However I do not know what does
that mean..Should I try to modify parameters. I am still not sure of syntax
of function. I cannot get that optimize work correctly. I am trying to test
that..however I cannot get to a result..In matlab however that works
correctly...Did anybody of you tried to succesfully run it ?

Michal 
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