要分類討論
當(dāng)a>1時 兩邊同取a的冪
x^2+x+1
解不等式loga(x^2+x+1)
解不等式loga(x^2+x+1)
數(shù)學(xué)人氣：913 ℃時間：2020-04-12 10:48:28
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