2. Inverse functions Inverse relation, Function is a relation
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.
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