# Thread: Integral of sin(x)/x =

1. ## Integral of sin(x)/x =

2. Okay, $\int \frac{sin x}{x} dx= Si(x)+ C$.
sin(x)/x, the "sinc function", cannot be integrated in terms of elementary functions- Si(x) is the "sine integral" function and is defined to be $\int \frac{sin x}{x}dx$. See Sinc function - Wikipedia, the free encyclopedia
Maybe $\int_0^{\infty}\frac{\sin(x)}{x}dx$?