Interpreting Reverse Polish Notation

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RPN (postfix notation) is super-useful for telling computers how to do order of operations on regular math (infix). This video shows how to take expressions written in postfix and figure out what they're equal to, using stack push and pop.
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Tysm <3 I would never forget it after the DuddoDuddoDuddoDooo method :) 6:33

itSinger
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Hey, this is so useful! Would you mind writing out the sum at 12.59 in algebraic form? Thank you

missyelious
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I love RPN, but I don't understand why some calculators (mine) have a stack limit of four... problems require too much thinking. Anyway, awesome videos! Thank you!!

ryfle
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35 seconds: Prefix is ×, +, 3, 2, 6

paulw