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/sci/ - Science & Math

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6565870 No.6565870 [Reply] [Original]

An obelus is a symbol consisting of a short horizontal line with a dot above and below, it denotes the division of the upper and lower part of a given fraction.

>> No.6565874

>>6565870
6+5+6+5+8+7+0= 37
3+7= 10 and 1+0= 1

Answer is 1
/thread

>> No.6565879

>obelus
Can we just replace this shit symbol with a slash already?

>> No.6565883

>>6565870
PEMDAS
6÷2 (1+2)=
P) 6÷2 (3)=
6÷2×3=
MD) 3×3=
9

>> No.6565885
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6565885

>>6565879
no

Obelus is god tier symbol.

go away, lizard

>> No.6565894

>>6565870
Brackets
Exponents
Divide
Multiply
Add
Subtract

(1 + 2) = 3
6/2 = 3
(3) (3) = 9

>> No.6565912

>>6565870
Under the assumptions stated explaining the grouping of an obelus.

6÷2(1+2) = 6/[2(1+2)] = 1

If we assume an obelus to have no grouping proprieties, I do believe we have left the set of what is being asked in this original question. Within the set of this question an ambiguous answer of 5±4 arises at the definition of the given division operation.

>> No.6565929

>>6565912
>If we assume an obelus to have no grouping proprieties
So is it your mission to misinform, or are you simply not knowledgeable? Judging from your trip it's the former.

>> No.6565944

>>6565883
I'm sick of this pemdas/bodmas shit. I don't know if its being taught wrong or if people are just abusing it.

Its not "multiply THEN divide THEN add THEN subtract"
It's "multiply AND divide, THEN add AND subtract."

pemdas is not a convention. The convention is to not write things in dumb fucking ambiguous ways.

>> No.6566185

>>6565870
That problem is just an example of poor syntax

>> No.6566209

>>6566185

I've clearly stated the definition of the operator, if you follow P.E.M.A. the answer is clear.

>> No.6566214

>>6565870
https://www.google.com/webhp?hl=en#hl=en&q=6%C3%B72+(1%2B2)

>> No.6566218

6 / 2 * 3

3 * 3 = 9

>> No.6566222

>>6566209
I'm saying that the syntax of the system isn't advanced enough in order to do this.

When you get more and more simple it becomes more and more difficult to adequately explain something through a language.

This is where P.E.M.A suffers.

It is similar to not being able to adequately explain color, because modern languages lack the ability for such a simple expression.

>> No.6566356

to clarify things add this to pemdas:
left to right rule: 2/3/2 = (2/3)/2 = 1/3
top down rule: 2^3^2 = 2^(3^2) = 512

>> No.6566368

>>6565944
One thing math teachers need to mention at least once is that PEMDAS is a notation convention, not a mathematical law. It seems obvious, but it needs to be stated.

>> No.6566401

ALGEBRA
2(1+2) is one thing

>> No.6566431
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6566431

6 * 2^(-1) * (1+2) = 9

>> No.6566458

>>6565870

>The Number Devil

I wonder what happened to my copy of that book?

>> No.6566459

>>6565870
It is true that the left hand side is equal to 1 or 9.

>> No.6566512

>>6565870
>obelus denotes division of ypper and lower parts of fractions.

No it doesn't. It denotes division.

>> No.6566643

The answer is 1 obviously