Post #4114490
2026-07-13 03:34 UTC
7/7
So when people say "Cajori said there was no agreement about whether to do 2(4) first or not"...
1. No, he didn't. He was talking about literal multiplication, with a multiply sign
2. he uses a/bc and a/(bc) as equivalent expressions on page 272, as every textbook (then and now) does (except for those using Lennes' made up wrong rule), because that's ALWAYS been the rule, ab=(a X b), as, even before Brackets started being used in Maths, aa was already the notation for a Product
Replies (1)
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@SmartmanApps@dotnet.social 2026-07-20 09:15
1/x #MathsMonday I'm coming back to #Mathematics order of operations (hopefully) one last time, just to flesh it out with some more #Maths textbook references, for those who want it (having only initially given one in each case). Not going overboard, just 4 #Math textbook screenshots per post (since Mastodon only allows 4 pics per post, that's a good number to finish it off with). I may come back in future, if some particularly good ones come along, hence unknown post count for now...