.2. Inverse functions ☆ Inverse relation, . 8 Function is a relation ☆ Is the function’ s inverse relation a function? No 今 Example:A={1,2,3},B={a,b},f:A→→B,f k( 1, a), (2, b), 3, b) is a function, but inverse relation f-l=(a, 1), (b, 2), (b, 3) is not a function❖ 2. Inverse functions ❖ Inverse relation, ❖ Function is a relation ❖ Is the function’s inverse relation a function? No ❖ Example: A={1,2,3},B={a,b}, f:A→B, f ={(1,a),(2,b),(3,b)} is a function, but inverse relation f -1={(a,1),(b,2),(b,3)} is not a function