《中学数学教学参考》2013年第10期(上旬)刊登的《一对形似质异问题的辨析》(以下简称文献[1]),对“问题1已知f(x)=3/4x~2-3x+4,若f(x)的定义域和值域都是[a,b],求a,b的值”和“问题2已知不等式a≤4/3x~2-3x+4≤6的解集为[a,b],求a,b的值”及其解决方法进行了比较,并得到了“问题2”这类题型的一般解法,读后深受启发,同时激发笔 “Analysis of a pair of similar quality problems” (No. [1]) published in the 10th edition of the “Mathematics Teaching Reference for Secondary Schools” (first ten days of 2013), f (x) = 3 / 4x ~ 2-3x + 4 if the domain and range of f (x) are [a, b], find the values ​​of a and b “and ” Problem 2 known inequality a≤4 / 3x ~ 2- The solutions of 3x + 4≤6 are [a, b], find the value of a, b “and their solutions, and get the general solution to the questions such as” question 2 " Inspired, inspired pen