1 2 cos 2x 0 July 8, 2019 16 32 64 128 2 cos 2x cosx 1 0 2 cos 2x 3cosx 1 0 1 cos 2x 3 cosx 2 0 8sin 2 2x cos 2x 1 0 Cos 1 cos 2 cos 3
