Geometry App - reboot problem

[eried]

(03-16-2017 09:22 PM)ChrisHP Wrote:  No, but won't do what I want.

The idea is that the tangent creates a table of x values against slope, which I can use with students to get them to work out the original equation by plotting the differential.

This is exactly what I have seen working (albeit about 2013/14), so I guess a later firmware update has introduced the bug.

How do I report bugs to HP? And do they take any notice?

Maybe thru HP forum: http://h30499.www3.hp.com/t5/Calculators/bd-p/bsc-408

but I am pretty sure they will see this message here too. TW, Cirille, etc