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Let A = {1, 2, 3, 4} and f : A → A be given by f = {(1, 4), (2, 3), (3, 2), (4, 1)}. Then f–1 = ___________. |
| Answer» Let A = {1, 2, 3, 4} and f : A → A be given by f = {(1, 4), (2, 3), (3, 2), (4, 1)}. Then f–1 = ___________. | |