求下列不定积分:int dfrac (x+1)({x)^2+2x+5}dx;求下列不定积分:;
int dfrac ({(x+1))^2}({x)^2}dx=
int dfrac (x+1)({x)^2+x+1}dx.
int dfrac ({x)^2+1}({(x+1))^2(x-1)}dx;;
34) int dfrac (dx)((x+1)(x-2));
.int dfrac ({(x+1))^2}({({x)^2+1)}^2}dx.
int dfrac (x+1)({x)^2+4x+13}dx
(int )_(0)^1dfrac (x+2)(sqrt {x+1)}dx=( )(int )_(0)^1dfrac (x+2)(sqrt {x+1)}dx=
int dfrac (5x-1)({x)^2-x-2}dx= (.A.int dfrac (5x-1)({x)^2-x-2}dx= (B.int dfrac (
(int )_(-1)^1(dfrac (sin x+1)(1+{x)^2}+(x)^4)dxA (int )_(-1)^1(dfrac (sin x+1)(