$ X(w) = \frac{2sin{3(w-2/pi)}}{w-2/pi}\, $
We already knew that when $ X(t) = \frac{sinWt}{/pi t}, X(w) = 1 for |w|<W. $
$ X(w) = \frac{2sin{3(w-2/pi)}}{w-2/pi}\, $
We already knew that when $ X(t) = \frac{sinWt}{/pi t}, X(w) = 1 for |w|<W. $