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x+1/x-1大于等于1
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x+1/x-1≥1,有:x≠-1
x+1/x-1 -1≥0
等式两边同时乘以 (x-1),得:
(x+1/x-1)-(x-1)/(x-1)≥0,化简得:
2x/(x-1)≥0,
有:2x≥0,x-1≥0,解得:
x≥0,x≥1,取其交集,即:
x≥1
x+1/x-1 -1≥0
等式两边同时乘以 (x-1),得:
(x+1/x-1)-(x-1)/(x-1)≥0,化简得:
2x/(x-1)≥0,
有:2x≥0,x-1≥0,解得:
x≥0,x≥1,取其交集,即:
x≥1
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