不定积分int dfrac (dx)(4{x)^2-9}=-|||-__.int dfrac (dx)(4{x)^2-9}=-|||-__int dfrac (dx)(4{x)^2-9}=-|||-__int dfrac (dx)(4{x)^2-9}=-|||-__int dfrac (dx)(4{x)^2-9}=-|||-__

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

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

求int dfrac (sqrt {{x)^2-9}}(x)dx.求.

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

不定积分 int dfrac (x+1)({x)^2-2x+4}dx=-|||-___________._________.

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

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

求下列不定积分int dfrac ({x)^2}(sqrt {4-{x)^2}}dx求下列不定积分

求不定积分int dfrac (1)(2x)sqrt (ln x)dx=（）.int dfrac (1)(2x)sqrt (ln x)dx=int dfrac

4.计算下列不定积分.-|||-(6)int dfrac (sin dfrac {1)(x)}({x)^2}dx