Casio fx-991EX vs Hp 50g speed difference

[Albert Chan]

(07-13-2018 08:50 PM)Tugdual Wrote:  Found something weird.
Was speed testing the fx991ex vs 50g on \(\int_0^{500}e^{-x} dx \)
Results:
fx-991EX: result:1 time:6.64s
50g using ->NUM : result:1 time:46.69s

Try this: \(\int_0^{200}sin(x) dx \) = 1 - cos(200) ~ 0.51281

If 50g returned -96.581, that means:
1. No symbolic processing used for integration
2. Integration by Simpson rule, thus poor performance (and wrong!)