对数函数 (21 23:4:6)
题目
对数函数 (21 23:4:6)
设函数 f(x) = f(1/x)lgx + 1,求f(10)
答案
f(10) = f(1/10)lg10 + 1=f(0.1)*1+1
f(0.1) = f(10)lg0.1 + 1=-f(10)+1
f(10)=-f(10)+1+1
f(10)=1
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