________ / 2 x*\/ 4 - x /x\ ------------- + 2*asin|-| 2 \2/
(x*sqrt(4 - x^2))/2 + 2*asin(x/2)
________ / 2 2 1 \/ 4 - x x ------------- + ----------- - ------------- ________ 2 ________ / 2 / 2 / x 2*\/ 4 - x / 1 - -- \/ 4
/ 2 \ | 1 6 2*x | x*|----------- - ----------- - -----------| | 3/2 ________ 3/2| |/ 2\ / 2 / 2\ | || x | \/ 4 - x \4 - x / | ||1 - --| | \\ 4 / / ------------------------------------------- 4
2 4 2 3 1 3*x 3*x 3*x - ------------- + ------------- - ----------- - ------------- + -------------- ________ 3/2 3/2 5/2 5/2 / 2 / 2\ / 2\ / 2\ / 2\ 2*\/ 4 - x | x | \4 - x / 2*\4 - x / | x | 4*|1 - --| 16*|1 - --| \ 4 / \ 4 /