sin(x-y)sin(x+y)-cos(x-y)cos(x+y)
来源:学生作业帮助网 编辑:作业帮 时间:2024/09/01 09:45:03
x)+ӨЭڕ`0
I*'B~
L Gŵa
<; ?Y@)
化简sin(x+y)sin(x-y)-cos(x+y)cos(x-y)的结果是?
化简sin(x+y)cos(x-y)+cos(x+y)sin(x-y)
sin(x-y)sin(x+y)-cos(x-y)cos(x+y)
y=(sin x + COS x)^2
化简sin(2x-y)*sin y+cos(2x-y)*sin y
请问sin(x+y)cos y-cos(x+y)sin y得多少
sin(x+y)sin(x-y)=k,求cos^2x-cos^2y
化简sin (x+y)sin x +cos (x+y)cos x=
y=2cos x (sin x+cos x)
解微分方程:y` cos y =(1+cos x sin y)sin y.
参数方程x=cos(sin+cos)y=sin(cos+sin)化为普通方程
求微分方程y'cos y+ sin(x-y)=sin(x+y)的通解.
求解微分方程y'*cos(y)=x+1-sin(y)
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cos(x+y)sinx-sin(x+y)cosx