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众所周知,学好数学离不开解题,而解题的一个核心思想就是将遇到的问题合理地转化为我们已经熟悉的问题,而对应就是实现这种转化的重要策略之一,下面就如何利用对应思想解计数问题加以盘点,以期能对大家解题能力的提升有所帮助.1先分步再对应例1全集U={1,2,3,4,5,6},集合A,B都是U的子集,若A∩B={1,3,5},则称A,B为“理想配
As we all know, to learn mathematics can not be separated from the problem, and a core idea is to solve the problems encountered reasonable transformation of the problems we have become familiar with, and the corresponding is one of the important strategies to achieve this transformation, the following on how to use Corresponding to count the number of ideological solution to be counted, with a view to improve the ability to solve problems everybody help .1 Step by step and then correspond to the complete set of examples 1 U = {1,2,3,4,5,6}, set A, B Is a subset of U, if A∩B = {1,3,5}, then said A, B is ”ideal match