1 cos2x x 2

1 cos2x x 21 cos2x x 21 cos2x x 21 cos2x x 21 cos2x x 21 cos2x x 2
1 cos2x x 21 cos2x x 21 cos2x x 21 cos2x x 21 cos2x x 21 cos2x x 2
1 cos2x x 21 cos2x x 21 cos2x x 21 cos2x x 21 cos2x x 21 cos2x x 21 cos2x x 21 cos2x x 21 cos2x x 21 cos2x x 21 cos2x x 21 cos2x x 21 cos2x x 21 cos2x x 21 cos2x x 21 cos2x x 21 cos2x x 21 cos2x x 21 cos2x x 21 cos2x x 21 cos2x x 21 cos2x x 21 cos2x x 21 cos2x x 21 cos2x x 21 cos2x x 21 cos2x x 21 cos2x x 21 cos2x x 21 cos2x x 21 cos2x x 21 cos2x x 21 cos2x x 21 cos2x x 21 cos2x x 21 cos2x x 2