已知f(x)=log底數(shù)為3真數(shù)為x的對數(shù),當(dāng)0
已知f(x)=log底數(shù)為3真數(shù)為x的對數(shù),當(dāng)0½,利用圖像求a得取值范圍
數(shù)學(xué)人氣：459 ℃時(shí)間：2020-01-24 16:40:53
優(yōu)質(zhì)解答
f(a)=log3(a)>1/2 -> a>3^(1/2) -> 3^(1/2)
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