PEMDAS is wrong

>> YOUR LINK HERE: ___ http://youtube.com/watch?v=lLCDca6dYpA

When it comes to order of operations (PEMDAS, BODMAS, BEDMAS, BIDMAS), who are you going to believe: your primary school teacher, or Richard Feynman? Applying PEMDAS to the viral maths puzzle 6/2(1+2) = ? gives the answer 9, as explained in videos by MindYourDecisions and others, but is that the whole story... • I'm an online maths tutor. Go to http://thawom.com/tutoring to find out more. You can also follow me on twitter at / thawom0 • References: • Abstract Algebra- The Basic Graduate Year by Robert B. Ash https://faculty.math.illinois.edu/~r-... p2 • The Feynman Lectures on Physics Vol. I Ch. 6: Probability http://www.feynmanlectures.caltech.ed... • Basics of Mechanical Engineering by Paul D. Ronney http://ronney.usc.edu/ame101/ame101-l... p7 (page 15 of the pdf) • Oliver Knill - Ambiguous PEMDAS http://www.math.harvard.edu/~knill/pe... • AMS Guide for Reviewers May 2000 https://web.archive.org/web/200008152... • APS Physical Review Style and Notation Guide https://cdn.journals.aps.org/files/st... p21

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