化简:sin(n∏-2/3∏)Xcos(n∏+4/3∏),n∈Z.

化简:sin(n∏-2/3∏)Xcos(n∏+4/3∏),n∈Z. sin^2xcos^3x的不定积分, ∫sin^3xcos^2xdx 化简sin^2(a+π)Xcos(π+a)Xcot(-a-2π)/tan(π+a)Xcos^3(-a-π） 化简[1-(sin^4 x-sin^2 xcos^2 x+cos^4 x)]/(sin^2 x)+3sin^2 x sin^8X+cos^8X+4sin^2Xcos^2x-2sin^4xcos^4X(化简） ∫sin^3 xcos xdx. 问高数求导 ∫sin^3xcos^2xdx ∫1/(sin^2xcos^2x) sin^2xcos^2x不定积分 化简sin^4x+sin^2xcos^2x+cos^2x=?(请写过程) 化简cos^4x+sin^2xcos^2x+sin^2x 化简(sin^4+cos^4+sin^2xcos^2x)/(2-sin2x) sin^2xcos^2x/(cos^3x+sin^3x)^2dx的不定积分 1-(sin^6x+cos^6x)=3sin^2xcos^2x 如何证明? (1-(sin^4x-sin^2xcos^2x+cos^4x)/sin^2x +3sin^2x 化简sin^2x+sin^2y-sin^2xsin^2y+cos^2xcos^2y 化简：cos^2x(2cos^2x+3)-sin^2x(2cos^2x+3)-4sin^2xcos^2x+3