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Cube root [HP-35]
03-06-2020, 11:35 PM (This post was last modified: 03-06-2020 11:50 PM by Gerson W. Barbosa.)
Post: #8
RE: Cube root [HP-35]
(03-06-2020 01:41 PM)Albert Chan Wrote:  I would swap the order of the keys though, so successive iterations improve the cube root
Code:
; CHAIN calculator, N^(1/3) = N^(5/15)
27                   ; N
√ √ ×                ; N^0x0.4    = 2.279507057
√ √ ×                ; N^0x0.5    = 2.800923042
√ √ √ √ ×            ; N^0x0.55   = 2.987153223
√ √ √ √ √ √ √ √ ×    ; N^0x0.5555 = 2.999949710

Nice change!

Another method, but more keystrokes, at least on the 8-digit Canon LC-37:

27
√ √ √ √ √ √ √ √ √ √ √
-
1 / 3
+ 1 =
× = × = × = × = × =
× = × = × = × = × =
× =
-> 3.000989


Replace 3 with 5 and you’ll get the 5th root: 1.9338459

From https://www.quora.com/Using-a-simple-cal...root-n-odd

PS: Again, it looks like they have trouble with /th/ – “...den press √ (12 times)” :-)
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Messages In This Thread
Cube root [HP-35] - Gerson W. Barbosa - 03-06-2020, 01:53 AM
RE: Cube root [HP-35] - EdS2 - 03-06-2020, 09:50 AM
RE: Cube root [HP-35] - Gerson W. Barbosa - 03-06-2020, 10:23 AM
RE: Cube root [HP-35] - Gene - 03-06-2020, 11:57 AM
RE: Cube root [HP-35] - Gerson W. Barbosa - 03-06-2020, 04:12 PM
RE: Cube root [HP-35] - Albert Chan - 03-06-2020, 01:41 PM
RE: Cube root [HP-35] - Gerson W. Barbosa - 03-06-2020 11:35 PM
RE: Cube root [HP-35] - Gene - 03-06-2020, 09:57 PM
RE: Cube root [HP-35] - Juan14 - 03-08-2020, 03:23 PM
RE: Cube root [HP-35] - Albert Chan - 03-08-2020, 04:05 PM
RE: Cube root [HP-35] - Gerson W. Barbosa - 03-08-2020, 05:31 PM
RE: Cube root [HP-35] - Gerson W. Barbosa - 03-11-2020, 03:05 AM
RE: Cube root [HP-35] - Albert Chan - 03-16-2020, 02:42 PM
RE: Cube root [HP-35] - Gerson W. Barbosa - 03-16-2020, 07:49 PM
RE: Cube root [HP-35] - Albert Chan - 03-16-2020, 10:54 PM
RE: Cube root [HP-35] - Albert Chan - 03-17-2020, 04:17 PM
RE: Cube root [HP-35] - Gerson W. Barbosa - 03-20-2020, 02:10 PM
RE: Cube root [HP-35] - Albert Chan - 03-20-2020, 05:36 PM
RE: Cube root [HP-35] - Gerson W. Barbosa - 03-20-2020, 10:47 PM



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