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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={(1,3)(2,1),(3,1),(4,2)} |
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Answer» SOLUTION :F(2)=f(3) =1 `implies` f is not injective `:.` f is not invertible. |
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