作业帮函数f(x)=log½[2(-x²+2x-1)+1]的单调递减区间为_______.急!
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函数f(x)=log½[2(-x²+2x-1)+1]的单调递减区间为_______.急!
函数f(x)=log½[2(-x²+2x-1)+1]的单调递减区间为_______.
急!
函数f(x)=log½[2(-x²+2x-1)+1]的单调递减区间为_______.急!
f(x)=log½[2(-x²+2x-1)+1]=log½[-2(x-1)²+1]
对数有意义,真数>0
-2(x-1)²+1>0
2(x-1)²