1.计算下列定积分:-|||-(22) (int )_(-5)^5dfrac ({x)^3(sin )^2x}({x)^4+2(x)^2+1}dx ;

7.计算下列定积分.-|||-(3) (int )_(dfrac {pi )(4)}^dfrac (pi {3)}dfrac (x)({sin )^2x}dx

1.计算下列定积分:-|||-(1) (int )_(dfrac {pi )(3)}^pi sin (x+dfrac (pi )(3))dx ;-|||-(2)

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

4.计算下列不定积分.-|||-(6)int dfrac (sin dfrac {1)(x)}({x)^2}dx

1.计算下列定积分:-|||-(10) (int )_(1)^sqrt (3)dfrac (dx)({x)^2sqrt (1+{x)^2}};

1.计算下列定积分:-|||-(8) (int )_(dfrac {1)(sqrt {2)}}^1dfrac (sqrt {1-{x)^2}}({x)^2}dx

计算下列定积分。-|||-(int )_(0)^1dfrac ({x)^4}(1+{x)^2}dx

求下列不定积分:-|||-(22) int dfrac (cos 2x)({cos )^2x(sin )^2x}dx ;

计算下列定积分。-|||-(int )_(0)^1x(e)^-dfrac ({x^2)(2)}dx

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