战舰世界第六赛季:sinxtanx=cos(x+y),用tanx表示tany
来源:百度文库 编辑:高校问答 时间:2024/05/13 06:48:58
you ben
sinxtanx=cos(x+y),用tanx表示tany
cos(x-y)=????????????
t=++x||--y;看不懂!
已知sin(x+y)=1,则cos(x+2y)+sin(2x+y)=?
急用~~~y=cos^(2x)的最小正周期
求y=sin^3(x),y=cos^3(x)的周期.
求y=sin^3(x),y=cos^3(x)的周期
求证:sin(2x+y)/sinx-2cos(x+y)=siny/sinx
5cos(x-y/2)+7cos(y/2)=0求tan(x/2)*tan[(x-y)/2]
y=(sin^4x+cos^4+sin^cos^)/(2-sin2x)最小正周期