不定积分int dfrac (1)(1+sqrt {1-x)}dx=( ) int dfrac (1)(1+sqrt {1-x)}dx=int dfrac (
int dfrac (dx)(sqrt {x(1+x))}
=dfrac (sqrt {1+x)-sqrt (1-x)}(sqrt {1+x)+sqrt (1-x)}
(9) =dfrac (sqrt {1+x)-sqrt (1-x)}(sqrt {1+x)+sqrt (1-x)} ;
(11) int dfrac (dx)(sqrt {x(1+x))} ;
(int )_(0)^1dfrac (dx)({x)^2sqrt (1-x)} 发散-|||-D (int )_(0)^1dfrac (dx)(xsqrt {1
求:int dfrac (arctan sqrt {x)}(sqrt {x)(1+x)}dx求:
计算int dfrac (arctan sqrt {x)}(sqrt {x)(1+x)}dx计算
∫dfrac ({(1-x))^2}(sqrt {x)}dx=___.∫___.
int dfrac (1-x)(sqrt {9-4{x)^2}}dx=________=________