DLMF:17.3.E5 (Q5345)
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| Language | Label | Description | Also known as |
|---|---|---|---|
| English | DLMF:17.3.E5 |
No description defined |
Statements
Failed to parse (LaTeXML (experimental; uses MathML): Invalid response ("") from server "http://latexml:8080/convert/":): {\displaystyle \qcos{q}@{x}=\frac{1}{2}(\qexp{q}@{ix}+\qexp{q}@{-ix})=\sum_{n=0}^{\infty}\frac{(1-q)^{2n}(-1)^{n}x^{2n}}{\qPochhammer{q}{q}{2n}},}
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DLMF:17.3.E5
0 references