define an operation X that satisfies Associative: a X b X c = a X (b X c) Commutative: a X b = b X a No (or very difficult) reverse operation . e.g. If we know a and (a X b) , it’s impossible to…
define an operation X that satisfies Associative: a X b X c = a X (b X c) Commutative: a X b = b X a No (or very difficult) reverse operation . e.g. If we know a and (a X b) , it’s impossible to…
讨论
登录后参与讨论
还没有评论，来说第一句吧。