(43 ) int dfrac (x-1)({x)^2+2x+3}dx ;
int dfrac (ln x-1)({x)^2}dx=______________________
1.求下列不定积分:-|||-(1) int dfrac ({x)^3}(x-1)dx;-|||-(2) int dfrac (x-2)({x)^2-7x+12
int dfrac (dx)(sqrt [3]{{(x+1))^2((x-1))^4}}
int dfrac (dx)(sqrt [3]{{(x+1))^2((x-1))^4}}
int dfrac (dx)(sqrt [3]{{(x+1))^2((x-1))^4}}
int dfrac ({x)^2+1}({(x+1))^2(x-1)}dx;;
int dfrac ({x)^3}({(1+{x)^2)}^2}dx=A.int dfrac ({x)^3}({(1+{x)^2)}^2}dx=B.int df
int dfrac (1)({x)^2}sin dfrac (3)(x)dx= __
int dfrac (5x-1)({x)^2-x-2}dx= (.A.int dfrac (5x-1)({x)^2-x-2}dx= (B.int dfrac (