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Graph of X*Sin(X) incorrect HP50g - Printable Version

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Graph of X*Sin(X) incorrect HP50g - MullenJohn - 09-28-2017 01:59 PM

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!


RE: Graph of X*Sin(X) incorrect HP50g - Brad Barton - 09-28-2017 03:48 PM

Works correctly on my 50g. Did you clear the previous graph before you plotted x*sin(x)?

Brad


RE: Graph of X*Sin(X) incorrect HP50g - MullenJohn - 09-29-2017 04:31 PM

Thank you Brad for responding.
My Bad. I meant to use X times SIN(1/X).
Cheers!


RE: Graph of X*Sin(1/X) is fine - Dieter - 09-29-2017 05:58 PM

(09-28-2017 01:59 PM)MullenJohn Wrote:  Graphing the function X times Sin(X) displays a Horizontal Asymptote at positive 1.
I am in radian mode using RPN.

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