设y=(x比1+x)求dy 比dx

设y=(x比1+x)的x次方,求dy 比dx 设y=(x比1+x)求dy 比dx 设y=（x/1-x)^x,求dy/dx 设y=sin2x/(1+x^2),求dy/dx, 设y=√(x^2-1)求dy/dx 设y=(1-x)³cosx,求dy/dx 设 x/y=ln(y/x) ,求 dy/dx 设X^y=Y^x, 求dy/dx|x=1： 设f(x)=1/x,y=f[(x-1)/(x+1)],求dy/dx 设（X=TCOST,Y=TSINT,求DY/DX 设y=(x^2),求dy/dx 设y=(sin2x)^x,求dy/dx