/ _______ \ 2 | / a - b /x\| ------------*atan| / ----- *tan|-|| _________ \\/ a + b \2// / 2 2 \/ a - b
(2/sqrt(a^2 - b^2))*atan(sqrt((a - b)/(a + b))*tan(x/2))
/ 2/x\\ _______ | tan |-|| / a - b |1 \2/| 2* / ----- *|- + -------| \/ a + b \2 2 / ---------------------------------- / 2/x\ \ | tan |-|*(a - b)| _________ | \2/ | / 2 2 |1 + ---------------|*\/ a - b \ a + b /
/ / 2/x\\ \ _______ | |1 + tan |-||*(a - b) | / a - b / 2/x\\ | \ \2// | /x\ - / ----- *|1 + tan |-||*|-1 + -----------------------------|*tan|-| \/ a + b \ \2// | / 2/x\ \ | \2/ | | tan |-|*(a - b)| | | | \2/ | | | |1 + ---------------|*(a + b)| \ \ a + b / / ----------------------------------------------------------------------- / 2/x\ \ | tan |-|*(a - b)| _________ | \2/ | / 2 2 |1 + ---------------|*\/ a - b \ a + b /
/ 2 2 \ | 2/x\ / 2/x\\ / 2/x\\ 2 2/x\ 2/x\ / 2/x\\ | _______ | 3*tan |-| |1 + tan |-|| *(a - b) |1 + tan |-|| *(a - b) *tan |-| 3*tan |-|*|1 + tan |-||*(a - b)| / a - b / 2/x\\ |1 \2/ \ \2// \ \2// \2/ \2/ \ \2// | 2* / ----- *|1 + tan |-||*|- + --------- - ------------------------------- + ------------------------------- - -------------------------------| \/ a + b \ \2// |4 4 / 2/x\ \ 2 / 2/x\ \ | | | tan |-|*(a - b)| / 2/x\ \ | tan |-|*(a - b)| | | | \2/ | | tan |-|*(a - b)| | \2/ | | | 4*|1 + ---------------|*(a + b) | \2/ | 2 2*|1 + ---------------|*(a + b)| | \ a + b / |1 + ---------------| *(a + b) \ a + b / | \ \ a + b / / ------------------------------------------------------------------------------------------------------------------------------------------------- / 2/x\ \ | tan |-|*(a - b)| _________ | \2/ | / 2 2 |1 + ---------------|*\/ a - b \ a + b /
/ 2 2 \ | 2/x\ / 2/x\\ / 2/x\\ 2 2/x\ 2/x\ / 2/x\\ | _______ | 3*tan |-| |1 + tan |-|| *(a - b) |1 + tan |-|| *(a - b) *tan |-| 3*tan |-|*|1 + tan |-||*(a - b)| / a - b / 2/x\\ |1 \2/ \ \2// \ \2// \2/ \2/ \ \2// | 2* / ----- *|1 + tan |-||*|- + --------- - ------------------------------- + ------------------------------- - -------------------------------| \/ a + b \ \2// |4 4 / 2/x\ \ 2 / 2/x\ \ | | | tan |-|*(a - b)| / 2/x\ \ | tan |-|*(a - b)| | | | \2/ | | tan |-|*(a - b)| | \2/ | | | 4*|1 + ---------------|*(a + b) | \2/ | 2 2*|1 + ---------------|*(a + b)| | \ a + b / |1 + ---------------| *(a + b) \ a + b / | \ \ a + b / / ------------------------------------------------------------------------------------------------------------------------------------------------- / 2/x\ \ | tan |-|*(a - b)| _________ | \2/ | / 2 2 |1 + ---------------|*\/ a - b \ a + b /