行列式化简sinx cos(x+y) cosxcosz sin(z-y) sinzsiny cos2y cosy

行列式化简sinx cos(x+y) cosxcosz sin(z-y) sinzsiny cos2y cosy y=sin X cos X +sinX +cosX如何化简? y=2cos^2 x+sinx 化简cosxsin(y-x)+cos(y-x)sinx= 化简sin(x+y)sinx+cos(x+y)cosx 化简sin(x+y)sinx+cos(x+y)cosx等于? 化简cos(x+y)sinx-sin(x+y)cosx sin(2x+y)/sinx-2cos(x+y) 化简 化简cosxsin(y-x)+cos(y-x)sinx cosxsin(y-x)+cos(y-x)sinx等于 化简cos(x+y)sinx-sin(x+y)cosx sinx*sin(x+y)+cosx*cos(x+y)等于? cos（x+y）sinx-sin（x+y）cosx 化简式子 1.y=2sinx-3cosx 2.y=cos²x-cos四次方x 3.y=cos四次方x-sin四次方x y=(2sinx-1)/(sinx+3)和y=cos^2x+sinx的值域 化简根号2COS(X-π/4)-sinx 求导y-sinx-cos(x-y)=0 y=2^sinx + cos√x 求y’