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Sinc function

1 byte added, 13:00, 4 September 2011
Key data
| [[antiderivative]] || the [[sine integral]] (''this is defined as the antiderivative of the sinc function that takes the value 0 at 0'')
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| [[power series]] and [[Taylor series]] || The power series about 0 (which is also the Taylor series) is<br><math>\sum_{k=0}^\infty \frac{(-1)^kx^{2k}}{(2k + 1)!} = 1 - \frac{x^2}{3!} + \frac{x^4}{5!} - \dots</math><br>The power series converges globally to the function.
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