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Does anyone know of an online calculator/tool that allows you to calculate integrals in the complex number set over a path?

I've searched in the standard websites (Symbolab, Wolfram, Integral Calculator) and none of them has this option for complex calculus (they do have, as it has been pointed out, regular integration in the complex plain, but none has an option to integrate over paths).

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  • $\begingroup$ Wolfram Alpha can deal with complex numbers, in fact, it usually assumes that the variable can also be complex. $\endgroup$
    – Peter
    Commented Jun 25, 2020 at 18:39
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    $\begingroup$ wolframalpha.com/examples/mathematics/complex-analysis (found by googling "Wolfram complex") $\endgroup$
    – Théophile
    Commented Jun 25, 2020 at 18:40
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    $\begingroup$ Why is this being down voted? It is a reasonable question in which the OP has shown some research effort. $\endgroup$
    – Mark Viola
    Commented Jun 25, 2020 at 18:44
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    $\begingroup$ @MarkViola I downvoted because it took about two seconds to find answers on Google, and these answers evidently refute the OP's claim. $\endgroup$
    – Théophile
    Commented Jun 25, 2020 at 18:47
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    $\begingroup$ @MarkViola The question would only make sense , if the given tools could not do complex calculus. But this is not the case. $\endgroup$
    – Peter
    Commented Jun 25, 2020 at 18:48

1 Answer 1

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Wolfram alpha sure can work with complex integrals. Here I'm integrating $e^{i \theta}$ with respect to $\theta$, between $0$ and $2 \pi$:

https://www.wolframalpha.com/input/?i=Integrate%5Be%5E%28I+theta%29%2C%7Btheta%2C0%2C2*Pi%7D%5D

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