怎么求sin(x)+(1+cos(x))/tan(x)的不定积分

怎么证明2(1-sin x)(1+cos x)=(1-sin x+cos x)^2 sin^4x+cos^4x怎么求导数? 怎么求sin(x)+(1+cos(x))/tan(x)的不定积分 cos x/sin x+sin x/(1+cos x) 化简. cos(sin x)怎么解 lim(sin(x^2*cos(1/x)))/x怎么做? f'(sin x)=1-cos x 求f''(x) 1/cos(x) - tan(x) = 3 求sin(x)1/cos(x) - tan(x) = 3求sin(x) sin^2x+cos^2x=1为什么,怎么求? 已知tan=2,求(cos x+sin x)/(cos x-sin x)+sin^2x sin方x+(2-cos)方怎么求 sin(1/x)*cos(1/x)怎么解- -.忘了 1/(1+cos(x)*sin(x))怎么积分 Sin^x怎么变化成 1-cos(2x) /2 cos(x)=1 +sin(x)cos(x)用两种方法求x 设f(sin x/2 )-1+cos x ,求f(x)、f(cos x/2 ). 求∫1/(sin^4x+cos^4x)dx, 求方程 sin^3x+cos^5x=1