Graph of X*Sin(X) incorrect HP50g

09282017, 01:59 PM
Post: #1




Graph of X*Sin(X) incorrect HP50g
Graphing the function X times Sin(X) displays a Horizontal Asymptote at positive 1.
I am in radian mode using RPN. Can anyone tell me how to display the correct graph? Cheers! 

09282017, 03:48 PM
Post: #2




RE: Graph of X*Sin(X) incorrect HP50g
Works correctly on my 50g. Did you clear the previous graph before you plotted x*sin(x)?
Brad 

09292017, 04:31 PM
Post: #3




RE: Graph of X*Sin(X) incorrect HP50g
Thank you Brad for responding.
My Bad. I meant to use X times SIN(1/X). Cheers! 

09292017, 05:58 PM
(This post was last modified: 09292017 05:59 PM by Dieter.)
Post: #4




RE: Graph of X*Sin(1/X) is fine
(09282017 01:59 PM)MullenJohn Wrote: Graphing the function X times Sin(X) displays a Horizontal Asymptote at positive 1. For the record: you now said that the function is x · sin(1/x). This function indeed approachs +1 as x approaches infinity: This means that 1/x approaches zero and thus sin(1/x) ≈ 1/x so that the limit is x · 1/x = 1. So there is no problem with the 50G. Dieter 

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