[Jprogramming] More deriv woes

Henry Rich henryhrich at gmail.com
Fri Jan 24 17:42:22 UTC 2020


The crash was caused by a buffer overflow, which resulted from the very 
long sentence that was created.  Fixed for the next release.

If all you need for your class is to display the sequence of derivatives 
of sin and cos, you could put them into a table, with a derivative given 
for -@(2&o.) for example.

Henry Rich

On 1/24/2020 9:23 AM, Arnab Chakraborty wrote:
> Dear all,
>
> sin deriv 1
>
> works fine. So do
>
> sin deriv 9
>
> though the output is horrendously complex.
>
> sin deriv 40
>
> gives domain error.  Last, but not the least,
>
> sin deriv 10
>
> crashes after some delay.
>
> JVERSION
> Engine: j901/j32/android
> Release-c: commercial/2020-01-12T21:36:27
> Library: 9.01.19
> J Android: 1.4.03/7.0/24
> Platform: Android 32 (armeabi-v7a)
> Installer: unknown
> InstallPath: /storage/emulated/0/Android/data/com.jsoftware.j.android/files
> Contact: www.jsoftware.com
> ----------------------------------------------------------------------
> For information about J forums see http://www.jsoftware.com/forums.htm



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