函数y=x^2-x+1⼀x-1(x>1)的最小值为

2024-12-16 07:48:22
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回答1:

y=x^2-x+1/x-1=[(x-1)^2+x]/(x-1)=[(x-1)^2+x-1+1]/x-1 =(x-1)+1/(x-1)+1≥2根号1 +1=3