Re: 10bii+ Trig Bug Message #3 Posted by Katie Wasserman on 6 July 2011, 1:24 a.m., in response to message #2 by Tim Wessman
Correct, I am referring to the sign change.
In the first case the TAN of 270 returns 1.00E500 in the second it returns +1.00E500. You need to do these steps in the order I wrote starting with a ALL CLEAR. I can reproduce this on both 10bii+ calculators that I have.
I realize that TAN 270 is infinite but in one case it's negative infinity and the other it's positive infinity. Apparently the sign of the last result obtained before the TAN function is the determining factor.
More....
Actually, it turns out that an overflow condition always carries over the sign from the previous calculation. This happens even for something like factorial, for example:
1

2
=
300
!
results in 1.00e500
The 10bii (not +) results in +1.00e500
Edited: 6 July 2011, 1:54 a.m.
