Help a newbie with a calculation result
09-14-2017, 05:49 PM (This post was last modified: 09-14-2017 05:51 PM by salvomic.)
Post: #2
 salvomic Senior Member Posts: 1,396 Joined: Jan 2015
RE: Help a newbie with a calculation result
(09-14-2017 05:24 PM)Skfir Wrote:  Hi guys. Sorry, I am a pianist, doing math for the sake of self-education. SO I am quite stupid in it. I enter the following in my HP Prime: -2^4 and it gives me the result -16, but shouldn't it be positive 16? because -2*-2*-2*-2=16?
Sorry apparently I am just dumb, but please explain.

hi,
is a problem of "order of operations" (see here).
(-2)^4 is 16, instead -2^4 is the same as (-2)^4 that's simply -16.
-2*-2*-2*-2 is seen with *implicit (), but not the power (-2^4)...

Salvo

∫aL√0mic (IT9CLU) :: HP Prime 50g 41CX 71b 42s 39s 35s 12C 15C - DM42, DM41X - WP34s Prime Soft. Lib
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 Messages In This Thread Help a newbie with a calculation result - Skfir - 09-14-2017, 05:24 PM RE: Help a newbie with a calculation result - salvomic - 09-14-2017 05:49 PM RE: Help a newbie with a calculation result - John Colvin - 09-14-2017, 05:50 PM RE: Help a newbie with a calculation result - DrD - 09-14-2017, 05:52 PM RE: Help a newbie with a calculation result - Aries - 09-14-2017, 06:13 PM RE: Help a newbie with a calculation result - Skfir - 09-14-2017, 09:06 PM RE: Help a newbie with a calculation result - Aries - 09-15-2017, 06:08 PM

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