Current Events > PEMDAS is a fucking scam.

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SrRd_RacinG
02/24/20 10:58:25 AM
#1:


Don't believe the mathematics establishment.

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Solid Sonic
02/24/20 10:59:18 AM
#2:


Technically PEMDAS is just mathematical grammar. It only makes sense from an arbitrary point of view because that's how equations are written out.

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DoGCyN
02/24/20 11:00:09 AM
#3:


Believe the establishment. Don't mathematics

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#4
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Questionmarktarius
02/24/20 11:01:19 AM
#5:


Where does weird stuff like matrices and fit into PEMDAS?
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Solid Sonic
02/24/20 11:02:27 AM
#6:


Also exponential evaluation is just an extension of mathematics.

Basically it's telling you "evaluate multiplication of identical values first before evaluating multiplication of different values".

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teepan95
02/24/20 11:06:06 AM
#7:


Questionmarktarius posted...
Where does weird stuff like matrices and fit into PEMDAS?

is just repeated addition, so A
Matrices are an object, not an arithmetic operation
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MarqueeSeries
02/24/20 11:16:42 AM
#8:


teepan95 posted...
Questionmarktarius posted...
Where does weird stuff like matrices and fit into PEMDAS?

is just repeated addition, so A
Matrices are an object, not an arithmetic operation

How do you multiply by a series without first evaluating it?

Since you can also pull constants outside of the sigma, it would seem as if the A would have to happen before the M
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teepan95
02/24/20 11:17:58 AM
#9:


MarqueeSeries posted...
How do you multiply by a series without first evaluating it?

Since you can also pull constants outside of the sigma, it would seem as if the A would have to happen before the M

If you like, you can imagine parentheses around the series (we usually omit these for clarity)

P trumps all
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SazhAndFrocobo
02/24/20 11:23:17 AM
#10:


One third of 100 is a physical impossibility. Don't believe the math community's lies

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ChrisTaka
02/24/20 11:33:28 AM
#11:


SazhAndFrocobo posted...
One third of 100 is a physical impossibility. Don't believe the math community's lies


Bullshit, I can't cut my $100 bill into three pieces just fine.

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ThyCorndog
02/24/20 11:38:51 AM
#12:


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scar the 1
02/24/20 11:41:43 AM
#13:


Exponentials are just repeated multiplications
Multiplication is just repeated addition
Multiplication is the same as division
Subtraction is the same as addition
Parentheses don't really matter when you have just addition, since addition is associative

So in the end PEMDAS is just A

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Notti
02/24/20 11:45:06 AM
#14:


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SrRd_RacinG
02/25/20 2:17:33 AM
#15:


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Verdekal
02/25/20 2:22:10 AM
#16:


This mathematician isn't real! Look, his pen protector comes right off!

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Notti
02/27/20 5:57:01 AM
#17:


Solid Sonic posted...
Technically PEMDAS is just mathematical grammar. It only makes sense from an arbitrary point of view because that's how equations are written out.


Goddamn Grammar-Nazis.

Math evolves!
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KLouD_KoNNeCteD
02/27/20 6:00:55 AM
#18:


I'm afraid big math is going to take over the world.
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