(int )_(0)^2xsqrt (2x-{x)^2}dx= __

定积分(int )_(0)^1sqrt (2x-{x)^2}dx=( )(int )_(0)^1sqrt (2x-{x)^2}dx=( )(int )_(0

(15)(int )_(0)^pi xsqrt ({cos )^2x-(cos )^4x}dx= __

[例5] 积分 (int )_(0)^2dx(int )_(0)^sqrt (2x-{x^2)}sqrt ({x)^2+(y)^2}dy= __

(8)(int )_(1)^2sqrt (2x-{x)^2}dx=__________________.(8)__________________.

(2) int xsqrt (x-1)dx;

(13)int(dx)/(xsqrt(x^2)-1);(13)$\int\frac{dx}{x\sqrt{x^{2}-1}};$

int dfrac (dx)(xsqrt {{x)^2-1}}=____________________________

(37 ) int dfrac (dx)(xsqrt {{x)^2-1}} ,

37 int dfrac (dx)(xsqrt {{x)^2-1}}

(37) int dfrac (dx)(xsqrt {{x)^2-1}}