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对于任意两个非零向量 a、b,其数量积为 :a .b=|a|.|b|.cos〈a,b〉,这个公式将两个向量的长度和夹角有机地联系在一起 ,为许多问题的解决提供了有效的工具 ,本文将借助于向量的数量积 ,探求两类无理函数的值域问题的统一解法 .1 f(x) =︻1 x +a +︻2 b - x(a 0 ,b 0 ,︻1
For any two non-zero vectors a and b, the quantity product is: a .b=|a|.|b|.cos. This formula organically links the length and angle of two vectors. Together, it provides an effective tool for the solution of many problems. In this paper, we will use the product of vectors to find a unified solution to the range problem of two types of irrational functions. f(x) = [1 x + a + [2 b - x(a 0, b 0, [1