4 2 x 12 5 July 8, 2019 16 32 64 128 4 x 2 12 x 5 0 4 3x 2 )- 2x 5x 12 4 2x x 5 12 1 4 cos 2 x 5pi 12 )= 5x 4 x 2 )= 12 4 x (- 5 12 2 6 1 2 x 12 4 5 12 3 4 x 2 5 2 3 x 1 4 12 5 2x 2 5x 12 x 4 4 1 5x )+ 6 2 12 x )+ 4x 2 x 4 )= 1 2 5x 12 8 x 5 )- 4 x 2 )= 12 Kahles helia 2 4 12 x 56 4 x 2 12 52