cos x/sin x+sin x/(1+cos x) 化简.
sin(1/x)-cos(1/x)/x
化简 1/2cos x-根号3/2sin x 根3sin x+cos x
化简[1-(sin^4x-sin^2cos^2x+cos^4x)/(sin^2)]+3sin^2x
sin(sin(sin(sin(x)=cos(cos(cos(cos(x),X等于多少?
化简sin(x)(cos(x)+cos(3x)+cos(5x)+cos(7x))
2cos x (sin x -cos x)+1
化简 cos^2(x)*sin^2(x)-sin^2(x)
化简 cos^(2)(x)*sin^(2)(x)-sin^(2)(x)
化简(1)√3sin x+cos x (2)√2(sin x-cos x) (3)√2cos x-√6sin x
(x*sin x*cos x)的导数
化简f(x)=2cos(x/2)·(sin(x/2)+cos(x/2))-1
化简sin(x+y)cos(x-y)+cos(x+y)sin(x-y)