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

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

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

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

求下列不定积分。-|||-int dfrac (1)(5-2x)dx

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

;(11) int dfrac (x+1)({x)^2+2x+5}dx ;

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

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

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 ({x)^2}(sqrt {4-{x)^2}}dx求下列不定积分