capital sigma is a big S and capital pi is a big P! they mean "big Sum" and "big Product" and if your math teacher never explained that then fire them
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Never bothered with the product one at all I think? Sums were obviously part of the pre-calc standards I think but product series aren't useful for that I think.
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you need sums for taylor series so they’re pretty common all over but products really only get used in pure math, and off the top of my head mostly in combinatorics, a few places in complex analysis, and number theory
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I can't understand why, of all professions, programmers
complain about an artificial language with odd notation when they use a few artificial languages with odd notations 40 hours at week.
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She does explain your such kind of tweets in her reply.
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I had not realized until now that of course there must be people who learned what a for loop is before learning summation notation
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*eye twitch*
[tries to not mention functional programming or list comprehensions or …]
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I figured out the sigma/sum part only after understanding of the for-loop semantics of the sigma sign, vaguely understanding integrals, and reading about the long-s letter: en.m.wikipedia.org/wiki/Long_s
Before that, I always thought the long s was an f without the stroke across.
