Do Casio calculators still do this? What about other calculators?
I mean newer models of Casio calculators.
Just submit to the continuation of TI's monopoly.
>>7921940
It's just the folly of PEMDAS, I guess multiplication technically comes before division in the acronym so fuck it, the top calc is right
>>7921973
I remembered from school that if you have two equal operations (operation and it's inverse like + and - , * and /, etc) you go left to right, so the TI would be right.
Not that it matters, since every reasonable person should add parentheses in these cases anyways
I really just want to know if Casio still uses this same convention for their newer calculators. Can anyone with a newer Casio confirm?
>>7921969
well if they can actually calculate correctly I guess they deserve it
My Casio fx-9750 gave me 1.
>>7921940
6÷2(1+2) gives 1
6÷2×(1+2) gives 9
It seems like casio calculators give implicit multiplication a higher priority than × multiplication
That is a really old casio you got there
>>7922591
This is shopped picture and common core is correct
>>7922631
I always thought that division and multiplication were on the same "plane", so in this case 6/2 would come before 3*3.
Am I wrong?
>>7922648
you are correct
>>7922654
dem lighting
ok so top one gives 1
and bottom 9
>>7922139
Can confirm both fx991ES and fx9860GII do this
btw, the 9860 auto-places parentheses (I did not put them in myself)
>>7922655
Then the answer is 9
Which means Casio a shit
9.
Is it just Casios that do this? From googling, it seems that they're inconsistent across different models.
>>7922591
yes, they're really going to be teaching that shit to fucking 7 year olds. jesus, why are conservatives so stupid?
>>7921969
Kids can even just use a phone to stimulate graphing calculators, no need to spend 150 on stone age hardware.
>>7923033
Why are you so stupid?
https://www.washingtonpost.com/news/the-fix/wp/2015/01/28/conservatives-hate-common-core-the-rest-of-america-who-knows/
https://pjmedia.com/blog/what-conservatives-hate-about-common-core-and-why-theyre-not-alone/
That picture is doctored anyway, but for the love of god, don't vote if you have no idea what you're talking about.
>>7921973
I read every /x operation as (1/x).
But like you said. PEMDAS shouldn't even be a thing
truly a remarkable feat in technoloy and math
>>7923292
What. Goddamnit. You controlled the rounding error didn't you. It hadn't occured to me that those two would be close though.
>>7923292
Just get an 84, slightly more expensive but worth every penny.
>>7923300
Really what one would want to do is use a smartphone. What are the better options for that? There's a cloud release of mathematica but it's expensive.
>>7923292
something's not right here
>>7923292
gr8 b8 m8
This is what happens when you press MODE and select 0 instead of Float.
>>7921940
some people *cough*physicists*cough* hold implicate multiplication as higher in precedence than regular multiplication and division.
One is division, one is a fraction.
And yes, I know. But apparently the chip in the Casio makes a distinction. Don't shoot the messenger.
>>7923089
I know it's doctored. I'm calling conservatives stupid for thinking that picture ISN'T fake. No 1st/2nd grader is going to be taught the order of operations.
>>7923524
i fucking hate you idiots who try way too fucking hard to make everything into a political debate
not only do we have an entire board dedicated to poorly-informed opinions, you chose /sci/ to shitpost on
i don't even care what your political views are, you should just fucking kill yourself
>>7922648
>>I always thought that division and multiplication were on the same "plane",
it is a convention
>>7923569
>implying /sci/ isn't already full of shitposting
>>7923654
>calling people out on their orthography
>on the internet
>on 4chan
>>7923700
Perhaps you're right; I shouldn't really give a damn, but I do.
>>7923708
it's okay, we welcome all pseudointellectuals on /sci/
>>7923714
Is it that hard to press shift?
>>7922591
>posting a shop
>>7923743
LEL
>>7923743
The absolute mad man!
>>7923354
>jpg
fugging bleb
>>7922671
OP here. Thanks for the reply, very informative. I didn't know the newer models auto-place parentheses. That changes everything. In that case, I think it's a useful feature. That saves work on the users part while removing ambiguity.
>>7923743
>i-i = 1
kek
>>7921973
PEMDAS was never meant to imply that multiplication is done before division, so I doubt someone who programs calculators would make such a mistake.
I'd like to see how the Casio calculator performs
6÷2×(1+2)
as opposed to
6÷2(1+2)
If I had to guess, I'd say that the answer to the former would be 9, as expected. Whoever programmed the calculator probably thought it would be more intuitive for multiplication using parentheses — i.e., 2(1+2) — to bind more tightly than regular multiplication/division, because the 2 and the (1+2) are not actually separated by a symbol.
>>7922683
Casio fx-991ES here. The result is 9 also.
Isn't all this shitposting over PEMDAS retarded? If you're writing an equation, you should communicate which parts you want to be done first with parentheses. It's why they were invented.
