Class 12 Relations And Functions · Mcq Single Correct1 Markstypes_of_functions
Class 12 Maths · Relations And Functions · Mcq Single Correct #74
Which function from \(\mathbb Z\) to \(\mathbb Z\) is a bijection?
✅ Step-by-Step Solution
Final Answer: Option (B): \(f(x)=x+2\)
- The translation x+2 has the integer inverse y-2 for every integer y. Cubing misses noncubes, 2x+1 misses even integers, and x^2+1 is not injective.
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