1 / | | 1 | ------------- dx | 2 | (1 - cos(x)) | / 0
1 / | | 1 1 1 | ------------- dx = oo - ---------- - ----------- | 2 2*tan(1/2) 3 | (1 - cos(x)) 6*tan (1/2) | / 0
/ | | 1 1 1 | ------------- dx = C - -------- - --------- | 2 /x\ 3/x\ | (1 - cos(x)) 2*tan|-| 6*tan |-| | \2/ \2/ /