TI59 Diagnostic forensics

[Pjwum]

(07-27-2020 09:51 PM)rprosperi Wrote:  The 67 returns 1.2692E-04.

Not surprisingly, the error comes from the first pair of terms (REC(POL(theta,r)).

I used DEG mode and all the actual functions as built in the 67 (so, e.g. I used [3] [X^2] rather than [3] [ENTER] [*] ).

Is 1.2692E-04 already the result after multiplication by 1E10? I ask because this would imply an internal precision of 18 digits for the HP.