3.int dfrac (dx)(sqrt {{({x)^2+1)}^3}}=

(44) int dfrac ({x)^3+1}({({x)^2+1)}^2}dx,

(43) int dfrac ({x)^3+1}({({x)^2+1)}^2}dx ;

int dfrac ({x)^3}(sqrt {1+{x)^2}}dx,

(int )_(1)^sqrt (3)dfrac (dx)({x)^2sqrt (1+{x)^2}};

(44) int dfrac ({x)^3+1}({({x)^2+1)}^2}dx.

(44) int dfrac ({x)^3+1}({({x)^2+1)}^2}dx.

(1) int dfrac (3sqrt {x)}(x(sqrt {x)+sqrt [3](x))}dx

(16) (int )_(1)^sqrt (3)dfrac (dx)({x)^2sqrt (1+{x)^2}};

(3) int dfrac (x)(sqrt {2-3{x)^2}}dx;

计算不定积分int dfrac (1)({x)^2sqrt ({x)^2+1}}dx。计算不定积分。