SAT数学Problem Solving练习题（41）
- 2017年07月27日14:00 来源：互联网
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摘要：下面是小站SAT频道为大家整理了SAT数学Problem Solving练习题(41)，供考生们参考，以下是详细内容。
以下是小站SAT频道为大家整理了SAT数学Problem Solving练习题(41)，供考生们参考，以下是详细内容。
Question 41: What are the solutions x of the equation ax·a1/x = 1, x ≠ 0 and a ≠ 1?
(a) x = -1
(b) x = 1
(c) x1 = -1 and x2 = 1
(d) The equation does not have real solutions
(e) x = a
Answer: ax·a1/x = ax + 1/x = 1 = a0
x + 1/x = 0
(x2 + 1)/x = 0
x2 + 1 = 0. This equation does not have real solutions as x2 + 1 will always be positive.
