Suppose F() is the Fourier transform of f(x). If fx|f(x)|dx \(x)|dx 5 |F()|d S\F()|d Ex www exist, then ExE 1/1. and Ep Suppose F() is the Fourier transform of f(x). If fx|f(x)|dx \(x)|dx 5 |F()|d S\F()|d Ex www exist, then ExE 1/1. and Ep