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58问答库 > 1.函数fx=(2^(-x)-2^x)[(cosx+sinx)^2-1]的奇偶性是

1.函数fx=(2^(-x)-2^x)[(cosx+sinx)^2-1]的奇偶性是

2025-04-10 00:42:38

推荐回答（1个）

回答（1）：

1. f(x)=(2^(-x)-2^x)*sin2x
f(-x)=(2^x-2^(-x))*sin(-2x)=(2^(-x)-2^x)*sin2x=f(x) 偶函数
2. （4）错 x=π/2时 f(x)=cosx 偶函数
3. B

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