8.求下列不定积分:-|||-(2) int dfrac (x+1)({x)^2+x+3}dx ;

求下列不定积分：int dfrac (x+1)({x)^2+2x+5}dx;求下列不定积分：;

2.求下列不定积分:-|||-(1) int dfrac (dx)({x)^2};-|||-(2) int xsqrt (x)dx; 2.求下列不定积

不定积分 int dfrac (x+1)({x)^2-2x+4}dx=-|||-___________._________.

求下列不定积分:-|||-(2) int dfrac (1)({x)^2+2x+2}dx;

求下列不定积分:-|||-int dfrac (1+2{x)^2}({x)^2(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

求下列不定积分int dfrac (1)({x)^3}(e)^dfrac (1{x)}dx求下列不定积分

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

4.求不定积分int(x+1)/((x-1)(x^2)+1)^(2)dx.4.求不定积分$\int\frac{x+1}{(x-1)(x^{2}+1)^{2}}d

求下列不定积分:int dfrac (2x+3)({x)^2+3x-10}dx.求下列不定积分:.