log0203的知识精选

设a=log0.20.3,b=log20.3,则(  )A.a+b<ab<0           ...
问题详情:设a=log0.20.3,b=log20.3,则()A.a+b<ab<0                    B.ab<a+b<0C.a+b<0<ab                    D.ab<0<a+b【回答】B∵a=log0.20.3>log0.21=0,b=log20.3<log21=0,∴ab<0.∵=+=lo...
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