How to show that the integral of sin 1/x is insoluble?

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SUMMARY

The integral of sin(1/x) is established as insoluble in terms of elementary functions. Participants in the discussion confirm that there is no simple antiderivative expressible with standard functions, and proving this statement is not feasible. The confusion between the two forms of the integral, ∫(sin(1)/x) dx and ∫sin(1/x) dx, is clarified, with the latter being the focus of the discussion.

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Homework Statement



Our tutor has given us an equation to think about:

Homework Equations



integral of sin 1/x

I'm pretty sure it's insoluble but how would I go about showing it is?

The Attempt at a Solution



No idea where to start any advice, tried by parts but it ends up in a mess? Not really a proof just because I can't solve it...
 
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I'm not sure what your teacher expects from you. Your suspicion that there is no simple antiderivative expressible with the "usual" functions is correct. Also there is no way you will be able to prove that statement. I would bet that your tutor can't either.
 
Just to be clear is the problem

∫((sin 1)/x) dx

or

∫sin (1/x) dx?

Because one of these is much easier :)
 

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