Find the solution process of the last question of the multiple-choice questions in the 20 10 Zhejiang college entrance examination mathematics volume.
Combine the respective values of A and B to list 12 functions, then substitute each value of X into each function to find out the solution, and then choose whether there is a corresponding value of Y, in which only two corresponding points meet the requirements (each function has a different domain, and the value of X that meets the requirements can be substituted according to the value range of X). As long as you calculate carefully and determine the domain of the function first, the problem will be much simpler.