Mathematics
Senior High
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g(x)=2x^2-ax+a-1のグラフがx軸と異なる2点で交わるようなaの値の範囲を求めよ。

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✨ Best Answer ✨

判別式 a^2-8(a-1)>0

これを解いてa<4-2√2,4+2√2<a

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