1 / | | ____________ | \/ 1 + cos(x) dx | / 0
1.35602019768418
_______________________________ / / 2/x\ | / tan |-| | ____________ / 1 \2/ /x\ | \/ 1 + cos(x) dx = C + 2* / 1 + ----------- - ----------- *tan|-| | / 2/x\ 2/x\ \2/ / / 1 + tan |-| 1 + tan |-| \/ \2/ \2/