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转化策略是数学中最普遍使用的一种思想方法。其基本的思路是：把甲种问题的求解转化为乙种问题的求解，然后利用乙种问题的解题方法获得问题的解答。其先决生条件是：甲种问题与乙种问题之间要有内在联系，且乙种问题比甲种问题更熟悉、更容易解答。引导学生把这种解题的思想?
Transformation strategies are the most commonly used method of thinking in mathematics. The basic idea is that the solution to the problem of type A is transformed into solution to the problem of type B, and then the solution to the problem is obtained by solving the problem of type B. The prerequisites are: There should be an internal connection between the A problem and the B problem, and the B problem is more familiar and easier to answer than the A problem. Guide students to this problem-solving ideas?