int (1-x)/(sqrt (9-4x^2))dx，

int dfrac (1-x)(sqrt {9-4{x)^2}}dx=________=________

(26) int dfrac (1-x)(sqrt {9-4{x)^2}}dx

2.求下列不定积分:-|||-(9)int dfrac (1-x)(sqrt {9-4{x)^2}}dx;

(6) int_((1)/(sqrt(2)))^1(sqrt(1-x^2))/(x^2)dx;(6) $\int_{\frac{1}{\sqrt{2}}}^{1

1.求下列不定积分:-|||-(2) int dfrac (1-x)(sqrt {9-4{x)^2}}dx;-|||-__

不定积分int dfrac (1)(1+sqrt {1-x)}dx=( ) int dfrac (1)(1+sqrt {1-x)}dx=int dfrac (

41)int(dx)/(1+sqrt(1-x^2));41)$\int\frac{dx}{1+\sqrt{1-x^{2}}}$;

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

(int )_(0)^1dfrac (dx)({x)^2sqrt (1-x)} 发散-|||-D (int )_(0)^1dfrac (dx)(xsqrt {1

(3) int_(4)^9 sqrt(x)(1+sqrt(x))dx;(3) $\int_{4}^{9} \sqrt{x}(1+\sqrt{x})dx;$