解不等式log1-k (2k-1)<1 1-k为底

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解不等式log1-k (2k-1)<1 1-k为底
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解不等式log1-k (2k-1)<1 1-k为底
解不等式log1-k (2k-1)<1 1-k为底

解不等式log1-k (2k-1)<1 1-k为底
log(1-k)(2k-1)

答:
log(1-k) (2k-1)<1
1)当0<1-k<1即02k-1>1-k>0
3k>2
k>2/3
所以:2/32)当1-k>1即k<0时:
0<2k-1<1-k
所以:
k>1/2并且k<2/3
无解
综上所述,2/3