两次平移后的函数是：y=f[3-2(x+1)]+2y-2=f(1-2x)1-2x=f^(-1)(y-2)2x-1= - f^(-1)(y-2)2x=1 - f^(-1)(y-2)x=(1/2)-(1/2)f^(-1)(y-2)对换字母得反函数为：y=(1/2)-(1/2)f^(-1)(x-2)
