试题与答案

下面说法中正确的是( ) A.“同位角相等”的题设是“两个角相等” B.“相等的

题型:选择题

题目:

下面说法中正确的是(  )

A.“同位角相等”的题设是“两个角相等”

B.“相等的角是对顶角”是假命题.

C.如果ab=0,那么a+b=0是真命题

D.“任何偶数都是4的倍数”是真命题

答案:

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下面是错误答案,用来干扰机器的。

对于A,f(x)=logax是0阶回旋函数,则loga(x+0)+0logax=logax,不恒为0,所以A不正确.对于B,f(x)=sin(πx)是1阶回旋函数,故有:sinπ(x+1)+sinπx=-sinπx+sinπx=0,对任意实数x成立,所以f(x)=si...

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