anonymous
  • anonymous
what does sequence have to do with trig?
Mathematics
  • Stacey Warren - Expert brainly.com
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schrodinger
  • schrodinger
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TuringTest
  • TuringTest
which sequence?
anonymous
  • anonymous
the one with a big ∑
TuringTest
  • TuringTest
That's called a series. The symbol is called Sigma A sequence means you do not add up the terms, a series means you do. There are a number of series related to trig functions, but I am guessing you mean the Taylor series expansion of sine and cosine...\[\cos x=\sum1-\frac{x^2}{2!}+\frac{x^4}{4!}-\frac{x^6}{6!}+\dots\]\[\sin x=\sum x-\frac{x^3}{3!}+\frac{x^5}{5!}-\frac{x^7}{7!}+\dots\]right?

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anonymous
  • anonymous
something like that but that goes into calc very fast when i just grabbed a trig book lol the whole problem when 6 64 ∑ 2 ^-k k=1 this is what the whole thing (problem) looks like
TuringTest
  • TuringTest
Most functions f(x) can be written in terms of Taylor series\[\sum_{n=0}^{\infty}\frac{f^{(n)}(a)}{n!}(x-a)^n\]However the problem you posted\[64\sum_{k=1}^{6}2^{-k}\]is a very different one, and has no relation to trig functions that I personally know of.
anonymous
  • anonymous
:\
anonymous
  • anonymous
it will be a while before i get to taylor series i only got to limits i am back tracking on trig
anonymous
  • anonymous
thank you vm
TuringTest
  • TuringTest
is that series that I posted second the correct one?
anonymous
  • anonymous
i was just focusing on what you said not the problem itself that if was or not part of trig at the moment then i looked at the calc part so ty very much :)
TuringTest
  • TuringTest
welcome :)

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