己知x满足厂2
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己知x满足厂2
己知x满足厂2
己知x满足厂2
先化简.f(x)=(Log2x - 2)·Log2(x / 2)= (Log2x - 2)·(Log2x - Log2(2))= (Log2x - 2)·(Log2x - 1) = (Log2x)^2 - 3Log2x + 2 = (Log2x - 1.5)^ 2 - 0.25
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