Tim Ricchuiti
Region: US
Tuesday 05 October 2021 23:14:34 GMT
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Eric Knauss :
pemdas isn't a rule, juxtaposition takes precedence over explicit multiplication and division. answer is 1
2024-11-17 02:46:53
0
Not Mister Burkett :
The rules are not ambiguous. The intention of the writer was. they should've written it clearer for if they intended to not be 9 they have erred.
2021-10-06 01:28:28
33
herefordogs27 :
Agree it’s ambiguous… but I also think every engineer would say that’s 9
2021-10-06 01:54:51
24
Christopher Burris :
Can we also talk about how PEMDAS is just a guideline, not some infallible law.
2021-10-06 01:16:16
24
Nate :
To me it seems that this problem could be solved by Polish Notation or RPN. The ambiguity becomes clear when translating between in-fix and pre-fix.
2021-10-06 06:22:33
22
kipsthorne :
Engineer here agreeing that it's ambiguous. I wish there were more maths teachers like you in the world! Your students are lucky to have you!
2021-10-06 10:40:02
18
Alexander Snow :
once a single value exists in parentheses it no longer follows the rules of parentheses rather an alternate symbol for multiplication.
2021-10-06 02:26:54
16
Juanpetito :
The focal point shouldn’t be whether it’s 1 or 9…but what was the point of writing that expression that way in the first place?
2021-10-06 12:25:55
10
user9603157310583 :
“tons of people are wrong” doesn’t refute the statement being ambiguous. If anything, people are only “wrong” BECAUSE of ambiguity.
2021-10-06 00:49:32
8
itsasmallworldafterall :
A numerator/denominator is, or often is, it’s own group. Invisible parentheses.
2021-10-06 01:17:59
7
Lazer :
ya. this is alot less ambiguous with a ÷ symbol instead of /, but still ambiguous. better to just rewrite as fraction to avoid any misinterpretation
2021-10-06 03:27:55
6
Mr.C :
there is no ambiguity. two variables next to each other with no operators implies a hidden multiplication operator, with or without parentheses.
2021-10-06 01:43:37
5
tonyraven735 :
i have a MEng in engineering i totally agree with you.
2021-10-06 00:34:30
5
. :
I think you are 100% right! I told people in other comments what you said prior cause that’s what ap calc teacher said last year
2021-10-06 02:50:46
5
Mosquito Farmer :
What throws me is I read that a 6 over 2(1+2) in the physic style whatever that’s called.
2021-10-06 01:38:18
4
Max Adolphus :
With no multiplication sign next to the parentheses implies it’s part of the expression and the distributive property applies. 2(x+y) = (2x+2y)
2021-10-06 02:07:54
4
independent thought :
i got to say. never have i ever seen someone like you. provide proof and theories as a bilateral reasoning person.
2021-10-06 00:05:09
3
Nunu :
as a comp Sci major I can attest to its ambiguity, also if if you try sticking that thing into a program the compilers gonna scream cuz its ambiguous
2021-10-06 04:44:20
3
P.D. :
Another algebraic convention (in addition to PEMDAS) is that implicit multiplication takes precedence over explicit multiplication and division.
2021-10-06 02:36:45
3
atruemind :
This is why people hate math
2021-10-06 00:20:10
3
Melissa Jean :
Wow your students are super lucky to have you.
2021-10-06 11:52:08
2
Seri ous ly :
Sorry, you are a nice guy, but the answer was clearly 9 and there is no ambiguity. You are reaching back to 1929. Just 🛑.
2021-10-07 23:07:33
2
American Bald Panther Society :
I don’t understand what the ambiguity is. Yeah, I had to think through the order of operations for a moment, but I don’t another interpretation
2021-10-06 00:28:44
2
John Lima :
it's because that's a crappy way to show division!
2021-10-06 06:39:23
2
Zen :
Arrested Development is GOLD
2021-10-06 01:02:45
2
Noah :
because people cannot agree on how to apply pemdas, that expression needs to be more explicit. there's a communication problem, so clarify.
2021-10-06 01:34:43
2
Jump Access Catch :
I am fully on your side! Good luck trying to get your point across to everyone as weirdly people find this controversial 🤷🏻♂️
2021-10-06 01:04:54
2
Nev :
I never heard the order of operations refered to as Pemdas. we were taught to use () if writing the 1 answer in a line 6/(2(1+2))
2021-10-06 02:47:39
2
Jatziry Callejas :
Ok but I’ve graduated college… and how did u get me to pay attention not in one tiktok but TWO Maths TikTok’s! Sorcery!
2021-10-06 13:58:45
2
user3732748696253 :
For what it’s worth, apparently my kids aren’t learning PEMDAS. The schools are calling it GEMS “Groupings, Exponents, Multiply/Divide, Subtract/Add”
2021-10-08 17:50:08
1
Collin Coalson :
this is what i was citing before. love this
2021-10-06 08:49:00
1
DogTrainerMike :
You really need to quit trying to solve it left to right. You cannot simply ignore that multiplication must happen before division in pemdas.
2021-10-06 03:40:22
1
Howard :
There's no universe math theory related to order of ops. It only has to do with common convention.
2021-10-06 04:04:11
1
B :
When writing the last equation, on the other video, linearly wouldn’t it be a different equation. 6/(2(1+2)) ? It doesn’t look to be the same equation
2021-10-06 02:41:06
1
claudiaojedacamposh :
I am so reading his website. This so interesting and exciting!!!! 🎉🎉
2021-10-06 05:12:39
1
Chris Anderson :
I love these videos. It has been years since my own university math classes but I love thinking about these things again.
2021-10-13 17:45:35
1
Jamie :
i am questioning what i remember from 6th grade math, because i could have sworn it was multiply before you divide, so thank you for the lesson
2021-10-13 03:04:09
1
Kirk Blumenthal :
simplify your work by making the \2 into either 2^-1 or * 1/2. you no longer have ambiguity. its all multiplication, order doesnt matter now.
2021-10-10 18:26:44
1
Stephey :
I recommend looking into Postfix notation that uses the LTR rule of equal precidence.
2021-10-10 08:57:35
1
James J :
my first master's degree was statistics, which is applied mathematics sure, the first question before we do anything is what are we trying to solve.
2021-10-09 17:36:03
1
foundherentist :
The ambiguity stems from the fact that there is no rule on how to change a fraction bar into a slash. So a/bc could mean two different things.
2021-10-06 05:26:08
1
Dr.Sadbruh :
Good discussion here! Definitely helps resolve issues I had with your previous video. Love the resources on notation and ambiguities
2021-10-06 02:30:45
1
Kevin McCluskey :
I'm disappointed at the number of math people that said either 1 or 9. the only answer is "no solution: insufficient information"
2021-10-08 19:45:06
1
Alexander Snow :
pemdas please excuse my degree and solution
2021-10-06 02:28:22
1
Sylvea 🏳️⚧️ :
I failed math in school. I can't do it. What I want to know is.. When writing an equation that represents nothing, like this one, (1)
2021-10-06 06:46:11
1
Peter King :
You're overthinking this. With a couple of sentences of clarification, there is no ambiguity.
2021-10-05 23:35:54
1
Gus Gus :
I hank you for your explanation. I’m a 1980 student
2021-10-06 21:57:56
1
Pavel Kebets :
PEMDAS will not help, but knowing that implicit multiplication goes before explicit MD will
2021-10-06 10:15:17
1
Robert McGovern :
Bringing facts, I like it :)
2021-10-06 10:31:37
1
Albion :
Resolves the ambiguity therefore an ambiguity exists! <—THIS
2021-10-06 10:37:29
1
SplitSniper7 :
A great man once said, "Why would you change anything?! Math👇is👇math!"
2021-10-06 02:20:26
1
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