Integral of sin x/x

[Brooke]

Hi, I was wondering if anybody could tell me how to integrate (sin(x)/x) or
at least what the intergral is? I think it might be by substitution but I
cannot get the answer. Thanks for your help.

[David W. Cantrell]

In article <39a5028f$0$776$7f31...@news01.syd.optusnet.com.au>,

"Brooke" <star...@optusnet.com.au> wrote:
>Hi, I was wondering if anybody could tell me how to integrate
>(sin(x)/x) or at least what the intergral is?

The indefinite integral of sin(x)/x can not be expressed in closed form
in terms of elementary functions. For definite integrals of sin(x)/x,
look at http://mathworld.wolfram.com/SineIntegral.html

Hope this helps,
David Cantrell

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[Gaurav]

Visit www.integrals.com
the soln. is = x - x^3/3.3! + x^5/5.5! -....

[Mecculum]

yeah, sin x/x is a taylor expansion key in the solution of the riemann zeta for
n=2.