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
(9) int dfrac (1)({x)^2sqrt (1+{x)^2}}dx
int dfrac (1-x)(sqrt {9-4{x)^2}}dx=________=________
(12) int dfrac (x)(sqrt {2)-3(x)^2}dx;
int dfrac (x)(sqrt {2-3{x)^2}}dx
int dfrac (x)(sqrt {2-3{x)^2}}dx
int dfrac (x)(sqrt {2-3{x)^2}}dx。。