Erratic behavior sqrt(1-cos(x)**2) near pi

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Erratic behavior sqrt(1-cos(x)**2) near pi

Forum: Help

Created: 2011-11-18

Updated: 2013-02-10

HFR - 2011-11-18

I'm trying to plot sqrt(1-cos(x)**2) Obviously this function has value 0 at pi. However, gnuplot doesn't handle this correctly.

How can I get a proper graph of this function?

Thanks,

Harrie.

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Bastian Märkisch - 2011-11-18

I suggest reading `help set samples`. You could also have a look at prob.dem in the demos directory.

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HFR - 2011-11-18

Thanks,

I found out that after setting the sampling rate to 1000, the function was plotted correctly.

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