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함수 f(x) = mx^2 + (m+1)x + 1 의 꼭짓점이 y 축 위에 있도록 m 을 결정하라
함수 f(x) = mx^2 + (m+1)x + 1 의 꼭짓점이 y 축 위에 있도록 m 을 결정하라
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