未分类题
设f(χ)是定义在[-a,a]上的任意函数,则下列答案中哪个函数不是偶函数? A.f(χ)+ f(-χ) B.f(χ)·f(χ) C、[f(χ)]2 D.f(χ2)
A.f(χ)+
B.f(χ)·f(χ)
C.f(χ2)
【参考答案】
C
提示:利用函数的奇偶性定义来判定。选项A、B、D均满足定义f(-χ)=f(χ),所以为偶函数,而C不满足,设......
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杜邦分析就是要找出影响净资产收益率的深层次原因,并提出对策。
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单项选择题
The word () means doctrine that states that water belongs to the person who first makes beneficial use of it .
The word () means "doctrine that states that water belongs to the person who first makes beneficial use of it".
A.equitable
B.appropriation
C.intention
D.trademark
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