求下列不定积分：int dfrac (sin xcos x)(1+{sin )^4x}dx.

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

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

计算不定积分int dfrac (x)(1+sin x)dx计算不定积分

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

不定积分 int (dfrac (1)({x)^2}+2sin x+dfrac (1)(x))dx= ( )不定积分 ()A.B.C.D.

求下列不定积分 int dfrac (dx)(2sin x-cos x+5)求下列不定积分

求不定积分int(x)/(1+cos x)dx.19.（5.0分）求不定积分$\int\frac{x}{1+\cos x}dx$.

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

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:-|||-(22) int dfrac (cos 2x)({cos )^2x(sin )^2x}dx ;