TI59 Diagnostic forensics

[rprosperi]

(07-27-2020 03:51 PM)Pjwum Wrote:  I don't have an HP67, the rightous foe. Is there anyone who could do the test?

The 67 returns 1.2692E-04.
Edit: Actual result is 0.00 - details below

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] [*] ).

So, far more accurate than the TI, but not nearly as good a result for testing the LEDs. Clever, clever those guys were, and no doubt tried a lot of formulas to come up with that result. Cool!