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re: Bizarre Math Question and Answer breaks the internet - Sorry if already posted
Posted on 4/16/15 at 5:59 am to ChineseBandit58
Posted on 4/16/15 at 5:59 am to ChineseBandit58
quote:
But you are still making the assumption that in the "48/2x" statement, the 2x takes precedence over the 48/2.
Incorrect, the order you move everything to one side of the equation doesn't change the answer. There is no way to get x=12 in the 288 equation.
quote:
In order to satisfy the PEMDAS fools, you would have to writhe "(48/2)(x)" or "48/(2x)" which is why PEMDAS is totally antithetical to algebra.
Again, no. The equation needs no parentheses to come to one unique answer.
quote:
I got a degree in Electrical Engineering and worked on every manned space program the nation has ever funded at NASA = and I never heard of the acronym PEMDAS.
No offense, but that doesn't make your opinion more valid than mine.
1
Posted on 4/16/15 at 6:09 am to LNCHBOX
quote:
No offense, but that doesn't make your opinion more valid than mine.
Didn't imply that it did - and I never take offense to statements made on any anonymous message board.
I THINK I was agreeing with you absolutely.
My anecdote was intended to demonstrate that PEMDAS was a recent invention that has no value other than to implant a flawed algorithm in the minds of elementary school students. My intention was to describe how reliance on the difference between terms and factors is the fundamental way to approach all such practical problems. PEMDAS only has relevance during arithmetic exercises in elementary school and can be ignored even then if one is careful about how a statement is written.
BTW - I was complimenting your analysis. You approached the problem as any functional engineer would approach it. I did point out however that in that approach, there had to be a divergence from the PEMDAS ritual in how you treat the "2x" as factor rather than separating the '2' from the 'x' as would be required by rigidly applying PEMDAS.
In other words, PEMDAS sucks - it has no place in an algebra world.
but it's all good - have a nice day.
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