Inverse Function

                     Lesson 1


                                                            Problem:  Is {(6,7),(8,9)} the inverse of the function {(7,6),(9,8)}?


                                                            Solution   The inverse of a function is the set of ordered pairs obtained

††††††††††††††††††††††††††††††††††††††††††††††††††††††††††† Step 1:†††††† by interchanging the first and second elements

††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††† †††††† of each pair in the original function.                                                                       


                                                            Solution   In the above question the pair is interchanged

††††††††††††††††††††††††††††††††††††††††††††††††††††††††††† Step 2:†††††† hence it is the inverse of the function.                                                                                                             


                                                            Solution   Answer: Yes itís the inverse of the function.

                                                            Step 3:           



                                                             Try two practice problems:  


                                                                               Solve the following:     




Is {(2, 3), (4, 5)} the inverse of the function {(3,2),(4,5)}?


Given function f, is the inverse also a function?









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