V ( f ) = ½ 2 + ¼ 4
V ( ) ½ 2 + ¼ 4 A translation (x) = 0 + u(x) → u(x) ≡ (x) – 0 V ( ) V (u + ) ½ (u + ) 2 + ¼ (u + ) 4 selects.
