The / sign doesn't make it any less ambiguous.
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
The / sign doesn't make it any less ambiguous.
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
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.
It's the standard
Can't believe I agree with guitar brah
It should really be written as 8/(2(2+2))=
In the calculator you always do that to guarantee the correct outcome.
Or (8/2)*(2+2).
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.
Last edited by pgardn; 08-01-2019 at 04:26 PM.
The (2+2) is a distraction. The (2+2) in parentheses always gets done first. 8/2*4 is the ambiguity.
That's how you get the 16
Just use ∫ if you're using it on the computer... google is your friend
Yep but this becomes Tedious.
8
_
2
_
2+2
_
2/3
_
(1/2)^(1/2)
K
but I do things with pencil and paper as I play in variable land.
You should study Japanese tbh. Nothing like drawing kanji such as 歳 (used for age)、龍 (dragon)、犠 (roughly sacrifice), 愛 (love) by hand.
You're all ing idiots, it's 64.
I have trouble printing the alphabet.
My Greek letters suck...
Hopeless.
16
the proof behind the 2nd infinity is one of my favorite
Yeah the diagonal proof is ing 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 .
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.
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