7.求下列简单有理函数的不定积分:-|||-(1) int dfrac (2x+1)({x)^2-2x+2}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

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

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

求不定积分int (x)^2(ln x-dfrac (1)(1+{x)^2})dx.求不定积分.

求不定积分int dfrac (1)(2x)sqrt (ln x)dx=（）.int dfrac (1)(2x)sqrt (ln x)dx=int dfrac

求下列不定积分。-|||-int dfrac (1)(5-2x)dx