int ((x)^3+1-dfrac (1)(x))dx=（ ） A int ((x)^3+1-dfrac (1)(x))dx= B int ((x)^3+1-dfrac (1)(x))dx= C int ((x)^3+1-dfrac (1)(x))dx= D int ((x)^3+1-dfrac (1)(x))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 (3{x)^3}(1-{x)^4}dx ;

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

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

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

求下列不定积分:-|||-(1) int dfrac (1)(5x-3)dx ;-|||-(3) int dfrac (1)(sqrt {x+1)+sqrt (

下列计算错误的是 （）。A int dfrac (1)(x)dx=ln |x|+C B int dfrac (1)(x)dx=ln |x|+C C int df

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 (x+{x)^3}(1+{x)^4}dx