[R] R optimization and curve()?

[jcress410]

Ray Brownrigg-2 wrote:
> 
> 
> I don't see any question here.
> 
> However you must RTFM.
> 
You're awful at the internet. People get intimidated about posting questions
to lists because of threads like this.  Most of the time when you want to
say RTFM you should say (at least) say which manual to read. 


Ray Brownrigg-2 wrote:
> 
> 1) The returned value of umax() is a list.  How do you expect curve() to
> plot a list?
> 
> 2) curve() requires that the function umax() must be vectorisable wrt its
> first parameter, 
> i.e. you pass it a numeric vector and it returns a numeric vector of the
> same length.
> 
> 3) you have to realise that curve() will only graph a 1-dimensional
> function
> 
> HTH,
> Ray
> 
but, there has to be some way to represent a multivariate function in terms
of two of its arguments, i just dont know what to use. 


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