Mathematics
Undergraduate
代数学
この証明をどう解けばいいか教えていただきたいです。
> -1 を満たす任意の∈Rに対し, -6x2 +9z≧k(z-4)」 が
問 4.3
成り立つようなk∈R の値の範囲を求めよ。
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