logx4＜2 ,logx2＞-1,logx2＜1/3,log3x＜0,logx3＞1,log1/3x＞-1,log1/3x＞3,log1/2x＜2

分类: 作业答案 • 2022-05-12 23:14:49

问题描述：

logx4＜2 ,logx2＞-1,logx2＜1/3,log3x＜0,logx3＞1,log1/3x＞-1,log1/3x＞3,log1/2x＜2
log3x＞3,log3x＜-2,log2x＜1/2,log2x＞1

答

1) logx4＜2 =logx x²,
若x>1,则4 x>2;
若 0 01时,则2>1/x,=> x>1/2,=>x>1;
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