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.

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

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

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

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

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

求int dfrac ({ln )^2sqrt (x)}(sqrt {x)}dx求

)int dfrac (dx)(sqrt {x)+sqrt [4](x)}

int dfrac (dx)(sqrt {x)+sqrt [4](x)}; ;