Bug 315422 - wrong tangent drawn on several functions using abs() in 2D plot
Summary: wrong tangent drawn on several functions using abs() in 2D plot
Status: RESOLVED FIXED
Alias: None
Product: kalgebra
Classification: Applications
Component: general (show other bugs)
Version: unspecified
Platform: Arch Linux Linux
: NOR normal
Target Milestone: ---
Assignee: Aleix Pol
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2013-02-18 21:58 UTC by Georg Schlisio
Modified: 2013-06-01 11:52 UTC (History)
1 user (show)

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Description Georg Schlisio 2013-02-18 21:58:12 UTC 
if i plot the function x*log(abs(x)) as 2D-Plot, kalgebra draws strange lines where there supposed to be tangents at cursor position.
this also happens with several other functions using the abs()-function:
- x*log(abs(x)): strange everywhere
- log(abs(x)): strange for x<0
- abs(x): strange everywhere

kalgebra version is 0.11, latest arch package.

Reproducible: Always
Comment 1 Aleix Pol 2013-05-31 23:51:30 UTC 
This was fixed recently, I think the fix should be in 4.10.
Comment 2 Georg Schlisio 2013-06-01 11:52:19 UTC 
yes i can confirm that with kdesc 4.10.3 all of the mentioned examples above work like a charm.
thanks for pointing out (and for fixing of course).