Casio FX-115MS bug
10-31-2018, 07:02 PM (This post was last modified: 07-19-2021 02:27 PM by Albert Chan.)
Post: #1
 Albert Chan Senior Member Posts: 2,616 Joined: Jul 2018
Casio FX-115MS bug
Tried solving a cubic using Casio FX-115MS:

1295/24 X³ - 1295/12 X² - 37/2 X + 0.248048 = 0

The calculator just crashed, with weird blinking random pixels ...

Same cubic, but scaled, avoided the crash:

f(X) = 1295 X³ - 2590 X² - 444 X + 5.953152 = 0

--> 3 roots = 2.157897584, -0.170399539, 0.012501955

Update: for accurate cubic roots, see Solving 2x^3 - 24x^2 + 23x + 283 = 0
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 Messages In This Thread Casio FX-115MS bug - Albert Chan - 10-31-2018 07:02 PM RE: Casio FX-115MS bug - klesl - 11-01-2018, 11:14 AM RE: Casio FX-115MS bug - ijabbott - 11-01-2018, 08:16 PM RE: Casio FX-115MS bug - G. Cook - 11-02-2018, 09:14 PM RE: Casio FX-115MS bug - Albert Chan - 11-03-2018, 02:41 PM RE: Casio FX-115MS bug - Albert Chan - 11-05-2018, 08:58 PM RE: Casio FX-115MS bug - Albert Chan - 11-07-2018, 08:15 PM RE: Casio FX-115MS bug - Albert Chan - 11-07-2018, 10:47 PM RE: Casio FX-115MS bug - Albert Chan - 11-08-2018, 04:17 PM RE: Casio FX-115MS bug - Albert Chan - 11-24-2018, 07:25 PM RE: Casio FX-115MS bug - ijabbott - 11-24-2018, 08:28 PM RE: Casio FX-115MS bug - klesl - 11-07-2018, 08:33 PM RE: Casio FX-115MS bug - Albert Chan - 11-08-2018, 02:51 PM RE: Casio FX-115MS bug - brickviking - 11-28-2018, 01:01 AM

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