OK, good point. And so the "error" in the squared back value is just a consequence of the finite number(s) - same discussion.Over_score wrote: ↑Thu Jun 23, 2022 8:33 pmI tend to say the WP43S result is the better one because it's the correctly rounded result.
0.4822862220714997783980731069786049561748... + i×0.4822862220714997783980731069786049561748... is the correct result according to WolframAlpha.
So the correctly rounded result to 34 digits is:
0.4822862220714997783980731069786050 + i×0.4822862220714997783980731069786050
And again, the "error" more likely appears when the square root number (to be rounded) is not far from between rounding up/down, here: 0.4822862220714997783980731069786049(562), i.e. the loss of information is maximum.
J-F