CODEWITHSUNDEEP
maxima
Andrew Mir
Andrew Mir

Reputation: 125

Why does Maxima display an incorrect function graph?

There is a function

(x-1)/log(x)

It is clear that the graph should be displayed starting with x>0. However, Maxima also displays on x<0.

Upvotes: 2

Views: 71

Answers (1)

Robert Dodier
Robert Dodier

Reputation: 17585

I guess that you must be calling draw2d or wxdraw2d. (It's probably always a good idea to post the exact code you are working with.) draw2d has an option named draw_realpart to control whether the real part of a complex result is plotted, which appears to be true by default.

Try draw2d(draw_realpart = false, explicit(...)) in order to cause only real values to be plotted.

plot2d likewise has an option plot_realpart, which see.

Upvotes: 2

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