Q9 of 47 Page 172

(a) What is the additive inverse of 0?

(b) What is the multiplicative inverse of 1?


(c) Which integers have multiplicative inverses?

(a) The additive inverse of 0 is 0 itself because 0 is neither positive nor negative number.


(b) The multiplicative inverse of 1 is 1 as 1 can be written as 1/1 which itself the reciprocal of the 1.


(c ) (1, -1) is a pair of integers having multiplicative inverse.


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