Comments
2
Participants
3
Subscribers
3
Votes
1
Views
95
The same question 
use ¬isdefined(d)
d is undefined (here is the bug) then applies to c ≠ d ∨ d ≟ false
c ≠ d is always true
d ≟ false is always false
so true ∨ false is always true
-------------------------------
Note: it is not possible to find the reason for d=undefined just from the image.
This would require the ggb-file instead of jpg.
use ¬isdefined(d)
Comments have been locked on this page!