解不等式0
问题描述:
解不等式0
答
(1)
x-1/x>0
(x^2-1)/x>0
(x-1)(x+1)/x>0
故有:x>1或-1
x-1/xx-1/x-1(x^2-x-1)/x(x-(1-根号5)/2)(x-(1+根号5)/2)/x故有:x综上所述,1