若log(1+k)^(1-k)

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若log(1+k)^(1-k)

若log(1+k)^(1-k)
若log(1+k)^(1-k)<1则实数k的取值范围

若log(1+k)^(1-k)
首先明确定义域:1+k>0且1-k>0解得-11时1+k>1-k解得k>0;当1+k<1时1-k>1+k解得k<0.综上解得:-1

底数是多少呀?

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