問道不等式的問題
問道不等式的問題
解關(guān)于x的不等式
x^2+ax+4>0 (a屬于R)
解關(guān)于x的不等式
x^2+ax+4>0 (a屬于R)
數(shù)學(xué)人氣:610 ℃時(shí)間:2020-01-30 17:15:54
優(yōu)質(zhì)解答
1)當(dāng)△=a^2-4*4>=0時(shí)即a>=4或a
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