________ / 2 /x\ x*\/ 4 - x + asin|-| \2/
x*sqrt(4 - x^2) + asin(x/2)
________ 2 / 2 1 x \/ 4 - x + --------------- - ----------- ________ ________ / 2 / 2 / x \/ 4 - x 2* / 1 - -- \/ 4
/ 2 \ | 3 1 x | x*|- ----------- + ------------- - -----------| | ________ 3/2 3/2| | / 2 / 2\ / 2\ | | \/ 4 - x | x | \4 - x / | | 8*|1 - --| | \ \ 4 / /
2 4 2 3 1 6*x 3*x 3*x - ----------- + ------------- - ----------- - ----------- + -------------- ________ 3/2 3/2 5/2 5/2 / 2 / 2\ / 2\ / 2\ / 2\ \/ 4 - x | x | \4 - x / \4 - x / | x | 8*|1 - --| 32*|1 - --| \ 4 / \ 4 /