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In 2009, Shandong college entrance examination mathematics 14 answer and detailed explanation!
Answer: A > 1 detailed explanation: this question is actually to examine students' understanding and application of the idea of "combination of numbers and shapes" First, the function f (x) = a ∧ x-x-a (a > 0 and a≠ 1) has two zeros, which means that the equation a ∧ x-x-a = 0 has two roots. That is, the equation a ∧ x = x+a has two roots. Let: g (x) = a ∧ x, u (x) = x+a. When 0 1, the function f (x) = a ∧ x-x-a (a > 0 and a≠ 1) has two zeros.