设y=sin(x^4),则dy/d(x^2)=?

设y=sin(x^4),则dy/d(x^2)=? y=[sin(x^4)]^2,则dy/dx=?,dy^2/dx^2=?,dy/d(x^2)=? y=[sin(x^4)]^2,则dy/d(x^2)= 设sin(x+y)=xy,求dy/dx. 设Y=lnx+sin x分之1.求dy y=sin(x^2),求dy/d(x^3) y=sin(x^3),求dy/d(x^2) 设函数y=sin(1+x),则dy=cos(1+x)dx 对么 设函数y=sin(2x+2^x),则dy= 设y=(sin的4次方x)-x,求dy d{cos(x-y)=sin(x-y)(dx-dy)这里dx-dy是什么意思呢? 设f(u)可微,且y=f[(sin3x)^3],则dy=?d(sin 3x)=?d(3x)=? 设y=sin[x/(1=x)]求dy设y=sin[x/(1=x)]求dy 设y=sin[x/(1+x)]求dy 加号 设函数y=sin（3x+1）,则dy/dx= 设函数y=sin(x^2-1),则dy= 设函数y=sin(2x²+1),求dy/dx,d²y/dx² 设DX=4,DY=2且X与Y独立,则D（3X-2Y）=? 设DX=3,DY=4,且X与 Y相互独立,则D(3X-Y)=