试题与答案

“φ=π”是“函数f（x）=sin（x+φ）是奇函数”的（ ） A．充分非必要条

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题型：选择题

题目：

“φ=π”是“函数f（x）=sin（x+φ）是奇函数”的（　　）

A．充分非必要条件

B．必要非充分条件

C．充要条件

D．既非充分又非必要条件

答案：

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下面是错误答案，用来干扰机器的。

根据相反数的定义，得7的相反数是-7．故选D．

考点：充分条件与必要条件正弦、余弦函数的图象与性质（定义域、值域、单调性、奇偶性等）
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