What is $\int - \frac{{sin x}^{2}}{x^{2}}$ $int -sinx^2/x^2$ ?

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What is $\int - \frac{{sin x}^{2}}{x^{2}}$ $int -sinx^2/x^2$ ?

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Answer 1 · 2016-02-06T19:04:49

$\int \frac{sin u}{u} d u$ $int sinu/u du$ is what Wolfram Alpha calls the Sine Integral (denoted $S i$ $Si$ ). It is not usually studied in introductory calculus courses.

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You can read more about it here: http://functions.wolfram.com/GammaBetaErf/SinIntegral/

and here http://reference.wolfram.com/language/ref/SinIntegral.html

and here
http://reference.wolfram.com/language/ref/SinIntegral.html

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What is $\int - \frac{{sin x}^{2}}{x^{2}}$ $int -sinx^2/x^2$ ?

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What is $\int - \frac{{sin x}^{2}}{x^{2}}$ $int -sinx^2/x^2$ ?