If 0 representsone of the operation +,-,x,is k 0 (L+M)=(K 0 L) +(K 0 M) for all numbers K,L,M?
(1) (K 0 1) is not equl to (1 0 K) for some number k
(2) 0 represents substraction
the answer is D
我當初覺得兩個都錯選E,因為第一個敘述我可以知道0=減號,但是若為減號題目的等式又不成立,(會多一個K)
example:k-(L+M)=2k-(L+M)
所以連帶之下敘述二我也覺得錯!!
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