Equation Icon  | | | | |∫2π | |∫2π | |fˆ| = √--1--- || f′(x)e−ijxdx ||= ...= √--1----|| f(s)(x )e−ijxdx ||= -1-||⟨f(s),p⟩|| j 2π |j| || || 2 π|j|s || || |j|s j 0 0 -1--∥∥ (s)∥∥ -1--∥∥ (s)∥∥ ≤ |j|s f ∥pj ∥ = |j|s f ,