fitting non-liner curves

Dear Sir/Madam,
                       I have two vectors say x<-c(0,0,2.73,3.42,3.95,4.26)
and y<-c(0.0,0.5,1.20,1.90,2.6,3.3). I want to fit y as a function of x and
get the equation.Do I have to use glm() ?
Depends on which underlying model you assume.

Uwe Ligges
Rangesh

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fitting non-liner curves

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