8/2(2+2)

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Originally Posted by LaMarcus Bryant

After a certain point in math division is virtually always written as a fraction. So yeah, it's easy to understand why people would.

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ok but the division sign is still the input you would use on a graphing calculator. you would have to appropriately use parentheses to define what is or isn't in the denominator. short of that, you cant just assume that it is, and you apply the basic rules and move left to right

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Originally Posted by LaMarcus Bryant

I hate to agree with him bc he's sick in the head and annoying, but Millennial Messiah is right.

The issue as I have come to conclude is the math problem would get thrown out of a test bc it's written ambiguously. You treat the bottom part of a division symbol as a denominator unless explicitly told otherwise.

There is a reason why after fifth grade they don't write that division symbol for questions like this in tests for any math class. They use the "/" fraction sign.
That's why the answer is 1.

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The / sign doesn't make it any less ambiguous.

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Originally Posted by spurraider21

ok but the division sign is still the input you would use on a graphing calculator. you would have to appropriately use parentheses to define what is or isn't in the denominator. short of that, you cant just assume that it is, and you apply the basic rules and move left to right

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Well yeah of course. But at what point in your math education are they going over this? Like I said baby level math. After a certain point you just read the division as a fraction, specifically to avoid mathematic semantic disagreements such as this.
Usage of the fraction would make crystal clear to the questioner and the test taker what the test is asking for. Which is why they use fractions in higher level math

Quote:

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Originally Posted by LaMarcus Bryant

Well yeah of course. But at what point in your math education are they going over this? Like I said baby level math. After a certain point you just read the division as a fraction, specifically to avoid mathematic semantic disagreements such as this.
Usage of the fraction would make crystal clear to the questioner and the test taker what the test is asking for. Which is why they use fractions in higher level math

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of course it would make it easier to see.

that doesn't mean you have an excuse to change the basic rules and declare that the actual answer is 1 because its an easy mistake to make. that still makes it a mistake

Everything below the / is a denominator

That's why nobody uses ÷ past like 4th grade.

8
__________

2(2+2)


Solve.

8÷2(2+2) = 16

8/2(2+2) = 1


Okay?

MM getting a W. Good for him.

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Originally Posted by Chucho

MM getting a W. Good for him.

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It's the standard :toast

Can't believe I agree with guitar brah :wtf

It should really be written as 8/(2(2+2))=

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Originally Posted by pgardn

It should really be written as 8/(2(2+2))=

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In the calculator you always do that to guarantee the correct outcome.

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Originally Posted by pgardn

It should really be written as 8/(2(2+2))=

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Or (8/2)*(2+2).

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Originally Posted by baseline bum

Or (8/2)*(2+2).

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The inner most parenthetical operation will be performed first in my illustration. Then the next parenthesis left. Then you have no parenthesis left so just do the last operation.

Yours is also correct in that either parenthetical can be performed first as long as you solve the remaining parenthetical next. And then carry out the last operation that has no parenthesis left. No parenthesis enclose another so Yep.

I will add that I hate square root signs because they might look like division.

so for me on this board, 9^(1/2) =3 or 9^(0.5) = 3

I also don’t like the integral sign because I simply can’t write it well. But it makes sense as a summation.

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Originally Posted by pgardn

The inner most parenthetical operation will be performed first in my illustration. Then the next parenthesis left. Then you have no parenthesis left so just do the last operation.

Yours is also correct in that either parenthetical can be performed first as long as you solve the remaining parenthetical next. And then carry out the last operation that has no parenthesis left. No parenthesis enclose another so Yep.

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The (2+2) is a distraction. The (2+2) in parentheses always gets done first. 8/2*4 is the ambiguity.

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Originally Posted by baseline bum

The (2+2) is a distraction. 8/2(2+2) = 8/2*4 is where the ambiguity comes in. The (2+2) in parentheses always gets done first.

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Agreed.

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Originally Posted by baseline bum

Or (8/2)*(2+2).

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That's how you get the 16

Quote:

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Originally Posted by pgardn

The inner most parenthetical operation will be performed first in my illustration. Then the next parenthesis left. Then you have no parenthesis left so just do the last operation.

Yours is also correct in that either parenthetical can be performed first as long as you solve the remaining parenthetical next. And then carry out the last operation that has no parenthesis left. No parenthesis enclose another so Yep.

I will add that I hate square root signs because they might look like division.

so for me on this board, 9^(1/2) =3 or 9^(0.5) = 3

I also don’t like the integral sign because I simply can’t write it well. But it makes sense as a summation.

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Just use ∫ if you're using it on the computer... google is your friend

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Originally Posted by Millennial_Messiah

Everything below the / is a denominator

That's why nobody uses ÷ past like 4th grade.

8
__________

2(2+2)


Solve.

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Yep but this becomes Tedious.

8
_
2
_
2+2
_
2/3
_
(1/2)^(1/2)

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Originally Posted by Millennial_Messiah

That's how you get the 16


Yes it is.


Just use ∫ if you're using it on the computer... google is your friend

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K

but I do things with pencil and paper as I play in variable land.

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Originally Posted by pgardn

I also don’t like the integral sign because I simply can’t write it well. But it makes sense as a summation.

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You should study Japanese tbh. Nothing like drawing kanji such as 歳 (used for age)、龍 (dragon)、犠 (roughly sacrifice), 愛 (love) by hand. :lol

You're all fucking idiots, it's 64.

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Originally Posted by baseline bum

You should study Japanese tbh. Nothing like drawing kanji such as 歳 (used for age)、龍 (dragon)、犠 (roughly sacrifice), 愛 (love) by hand. :lol

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I have trouble printing the alphabet.

My Greek letters suck...

Hopeless.

16

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Originally Posted by baseline bum

Meh if you want an interesting math question jump down the rabbit hole that is the axiom of choice. Or maybe how complicated the idea of infinity is mathematically.

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the proof behind the 2nd infinity is one of my favorite

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Originally Posted by Trainwreck2100

the proof behind the 2nd infinity is one of my favorite

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Yeah the diagonal proof is fucking awesome. First saw it in Baby Rudin with sequences of 0 and 1, which also proved the segment [0,1] is uncountable when you consider binary representations of numbers. Sad that Cantor went nuts studying this shit.

it should be noted that for anyone reading the article both the mathematician and the theoretical physicist agree the answer is 16. The doctoral statistics student declined to answer.