[R] help for MLE

[Spencer Graves]

      Is this a homework problem? 

      The "+" means the statement is not syntactically complete.  
Perhaps you have more "(" than ")"? 

      Also, have you read "the posting guide! 
http://www.R-project.org/posting-guide.html"?  Many people answer their 
own questions just following that guide. 

      spencer graves

Edward Sun wrote:

> Dear Sir/Madam,
>
> I am using R version 1.8.1. I am doing following tast:
>
> First generate 100 Gaussion(3,1) numbers, then write the likelihood 
> function to estimate the parameters of Gaussian distribution by direct 
> maximizing the likelihood function.
>
> My likelihood function is:
>
>> fn<-function(x) 
>> (-50*log((sd(x))^2))-50*log(sqrt(2*pi))-(1/2*((mean(x))^2))*(sum((x-(mean(x))^2)) 
>>
>
>
> After I input above function, the '' >'' turned to be '' + ''. and it 
> did not work.
>
> I am looking for the help to solve this tast by writting a likelihood 
> function.
>
> Thanks a lot.
>
> Best regards.
> edward sun
>
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