Comment on ))<>((

• SmartmanApps@programming.dev ⁨1⁩ ⁨year⁩ ago

  plus.maths.org/content/pemdas-paradox

  There’s no pemdas paradox, just people who have forgotten the order of operations rules

  Even two casios won’t give you the same answer:

  The one on the right is an old model. As far as I’m aware Casio no longer make any models that still give the wrong answer.

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• lolcatnip@reddthat.com ⁨1⁩ ⁨year⁩ ago

  Ah, I wasn’t thinking of calculators that let you type in a full expression. When I was in school, only fancy graphing calculators had that feature. A typical scientific calculator didn’t have juxtaposition, so you’d have to enter 6÷2(1+2) as 6÷2×(1+2), and you’d get 9 as the answer because ÷ and × have equal precedence and just go left to right.

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  • SmartmanApps@programming.dev ⁨1⁩ ⁨year⁩ ago

    A typical scientific calculator didn’t have juxtaposition, so you’d have to enter 6÷2(1+2) as 6÷2×(1+2)

    That’s not true

    you’d get 9 as the answer because ÷ and × have equal precedence and just go left to right

    Well, more precisely you broke up the single term 2(1+2) into 2 terms - 2 and (1+2) - when you inserted the multiplication symbol, which sends the (1+2) from being in the denominator to being in the numerator. Terms are separated by operators and joined by grouping symbols.

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    • lolcatnip@reddthat.com ⁨1⁩ ⁨year⁩ ago

      I’m not sure what you’re getting at with your source. I’m taking about physical, non-graphic scientific calculators from the 1990s.

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      • SmartmanApps@programming.dev ⁨1⁩ ⁨year⁩ ago

        I’m taking about physical, non-graphic scientific calculators from the 1990s.

        Yep, exact same as the calculator in the linked thread. The expression entered was 6/2(1+2).

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