若n为正整数,则(-1)(-1)(-1)...()2n+1个-1相乘))=
问题描述:
若n为正整数,则(-1)(-1)(-1)...()2n+1个-1相乘))=
答
因为2N+1是奇数,所以(-1)(-1)(-1)...()2n+1个-1相乘))=-1
若n为正整数,则(-1)(-1)(-1)...()2n+1个-1相乘))=
因为2N+1是奇数,所以(-1)(-1)(-1)...()2n+1个-1相乘))=-1