均值不等式解函数f(x)=(x²-x=1)/(x-1) (x>1)f(x)=(x²-x+1)/(x-1) (x>1) 打错了
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均值不等式解函数f(x)=(x²-x=1)/(x-1)(x>1)f(x)=(x²-x+1)/(x-1)(x>1)打错了均值不等式解函数f(x)=(x²-x=1)/(x-1
均值不等式解函数f(x)=(x²-x=1)/(x-1) (x>1)f(x)=(x²-x+1)/(x-1) (x>1) 打错了
均值不等式解函数
f(x)=(x²-x=1)/(x-1) (x>1)
f(x)=(x²-x+1)/(x-1) (x>1) 打错了
均值不等式解函数f(x)=(x²-x=1)/(x-1) (x>1)f(x)=(x²-x+1)/(x-1) (x>1) 打错了
f(x)=(x²-x)/(x-1)+1/(x-1)
=x+1/(x-1)
=(x-1)+1/(x-1)+1
x>1,x-1>0
所以f(x)≥2√[(x-1)*1/(x-1)]+1=2+1=3
最小值是3
f(x)=x+1