(8) (int )_(0)^1(x)^2sqrt (1-{x)^2}dx :

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

(1) (int )_(0)^a(x)^2sqrt ({a)^2-(x)^2}dx(agt 0);

(int )_(1)^sqrt (3)dfrac (dx)({x)^2sqrt (1+{x)^2}};

.int dfrac (sqrt {1+{x)^2}+sqrt (1-{x)^2}}(sqrt {1-{x)^4}}dx.

(16) (int )_(1)^sqrt (3)dfrac (dx)({x)^2sqrt (1+{x)^2}};

(9) int dfrac (1)({x)^2sqrt (1+{x)^2}}dx

【题目】-|||-求下列不定积分:-|||-int dfrac (x+2)({x)^2sqrt (1-{x)^2}}dx ;

[题目]-|||-求下列不定积分:-|||-int dfrac (x+2)({x)^2sqrt (1-{x)^2}}dx;

(6) () =dfrac (1)(sqrt {1-{x)^2}} int dfrac (1)(sqrt {1-{x)^2}}dx=() .

(int )_(0)^1dfrac (x)(sqrt {1-{x)^2}}dx= [填空1]