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Let X ={1,2,3,4}Determine whether f:X rarr Xdefined as given below have inverses. Find f^(-1) if it exist f={(1,4,),(2,3),(3,2),(4,1)}

Answer»

Solution :x={1,2,3,4}
f is BIJECTIVE. Hence `f^(-1)` EXISTS.
` f^(-1) ={(4,1),(3,2),(2,3),(1,4)}`


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