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

求不定积分int dfrac (1)(xsqrt {{x)^2-1}}dx。求不定积分。

2.求下列不定积分.-|||-(2) int dfrac (1)((1+2x)(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)(5-2x)dx

2.求下列不定积分:-|||-(14) int (dfrac (3)(1+{x)^2}-dfrac (2)(sqrt {1-{x)^2}})dx;

不定积分 int dfrac ({x)^2-1}(sqrt {xsqrt {x)}}dx=

2.求下列不定积分:-|||-(9)int dfrac (1-x)(sqrt {9-4{x)^2}}dx;

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

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

求下列不定积分int dfrac ({x)^2}(sqrt {4-{x)^2}}dx求下列不定积分