- #1

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## Main Question or Discussion Point

In the table of integral, there is this formula

[tex]\int_0^{\infty}\frac{sin(ax)}{x}\,dx=\frac{\pi}{2}\text{sign} a[/tex]

is sign a here is literally the sign of a, or it means something else?

[tex]\int_0^{\infty}\frac{sin(ax)}{x}\,dx=\frac{\pi}{2}\text{sign} a[/tex]

is sign a here is literally the sign of a, or it means something else?