求sin^2(x/2)-cos^2(x/2)的不定积分

已知tan=2,求(cos x+sin x)/(cos x-sin x)+sin^2x 已知sin(x)+3cos(x)=2,求sin(x)-cos(x)/sin(x)+cos(x)=? 2sin^2x - 5sin x cos x=3 cos^2x,求X, 已知:tan x=2 求:sin x+cos x/sin x-cos x=? tan(x)=2求sin(x)cos(x)=? tan x=2,求 sin x * cos x=? sin(x+y)sin(x-y)=k,求cos^2x-cos^2y 化简(sin x+cos x-1)(sin x-cos x+1)/sin 2x 设f(sin x/2 )-1+cos x ,求f(x)、f(cos x/2 ). 求积分∫sin^2x cos^2x 求不定积分 ：| ( sin^2 x / cos^3x ) dx 求微分sin^2x*cos^5x*dx 求不定积分：(根号cos(x))/(sin^2(x)) 求微积分 ∫sin^2(x)cos^4(x) dx y =(cos^2) x - sin (3^x),求y' 求不定积分 ∫ (ln sin x) / (cos^2 x) dx 求积分：∫sin^2 (x) /cos^3 (x) dx 求y=sin x/(2-cos x)值域