this a 4 month old thread

Yeah, I know, but it'll show up in search results for all eternity, and it's full of disinformation. As a Maths teacher/tutor who is sick of hearing "But Google/Wolfram/TI says...", I'm doing my best to try and get said people to fix their damn calculators (and also make people aware that those calculators are wrong. (sigh) I miss the old days when all calculators gave the right answer - what happened??). If you feel the same way then feel free to share my links - that's what they're there for. :-)

And right at the moment I'm feeling too tired to do anything which requires me to think about it, so just doing what I can do on automatic. ;-)

And also if I hadn't been replying to this thread then you wouldn't have got the proof that you were right. :-)