# [R] Graph f(x) = 1/x

AbouEl-Makarim Aboueissa abouelmakarim1962 at gmail.com
Tue Sep 19 10:19:34 CEST 2017

```Dear Zeileis:

Thank you very much

abou

On Tue, Sep 19, 2017 at 4:13 AM, Achim Zeileis <Achim.Zeileis at uibk.ac.at>
wrote:

>
>
> On Tue, 19 Sep 2017, AbouEl-Makarim Aboueissa wrote:
>
> Dear All: good morning
>>
>> I am trying to graph the function y=f(x)=1/x over the interval (-5,5). But
>> I am getting an error message. Please see below.
>>
>> I am getting the error message: *Error in xy.coords(x, y, xlabel, ylabel,
>> log) : *
>> *  'x' and 'y' lengths differ*
>>
>
> You have "y < 1/x" rather than "y <- 1/x"! So "y" is not assigned and
> presumably you have some old "y" variable in your global environment that
> is used and does not match the length of "x".
>
>
>> x
>>
>> x <- seq(-5, 5, 0.01)
>> y < 1/x
>>
>> plot(x,y, type='l', xlim=c(-5, 5), ylim=c(-5, 5), xlab = "x", ylab = "f(x)
>> = 1/x", lwd = 2, col ="red")
>>
>> abline(h=0, lty=2, col = "blue")
>> abline(v=0, lty=2, col = "blue")
>> axis(1)
>> axis(2)
>> title(main="The Graph of f(x) = 1/x")
>>
>>
>> any help will be highly appreciated.
>>
>>
>> with thanks
>> abou
>> ______________________
>> AbouEl-Makarim Aboueissa, PhD
>> Professor of Statistics
>> Department of Mathematics and Statistics
>> University of Southern Maine
>>
>>         [[alternative HTML version deleted]]
>>
>> ______________________________________________
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>> and provide commented, minimal, self-contained, reproducible code.
>>
>>

--
______________________
AbouEl-Makarim Aboueissa, PhD
Professor of Statistics
Department of Mathematics and Statistics
University of Southern Maine

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