/x\ acosh|-| \a/
d / /x\\ --|acosh|-|| dx\ \a//
1 -------------------------- _______ ________ / x / x a* / 1 + - * / -1 + - \/ a \/ a
/ 1 1 \ -|----- + ------| | x x| |1 + - -1 + -| \ a a/ ----------------------------- _______ ________ 2 / x / x 2*a * / 1 + - * / -1 + - \/ a \/ a
3 3 2 -------- + --------- + ---------------- 2 2 / x\ / x\ / x\ / x\ |1 + -|*|-1 + -| |1 + -| |-1 + -| \ a/ \ a/ \ a/ \ a/ --------------------------------------- _______ ________ 3 / x / x 4*a * / 1 + - * / -1 + - \/ a \/ a