Hello,
This seems like a bug, removing 'maximum = TRUE' has no effect except
that the returned value says it's a minimum, not a maximum.
Rui Barradas
Em 28-10-2013 17:00, Shantanu MULLICK escreveu:
Hello Everyone,
I want to perform a 1-D optimization by using the optimize() function. I
want to find the maximum value of a "logistic" function. The optimize()
function gives the wrong result.
My code:
f= function (k) {
T_s = 20
result = (2- 2/(1+ exp(-2*T_s*k)))
return(result)
}
optimize(f, c(0, 5), tol = 0.0000000000001, maximum= TRUE)
The maximum value for the function happens at k=0, and the maximum value is
1. Yet the optimise function, says that the maximum value happens at k=
4.9995, and the maximum value is 0.
Thanks in advance!
Warm Regards,
Shantanu
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