f:N→N, where $$f(x)=x$$−$$($$−$$1)x$$ . Then f is

Correct option is 3one-one and onto

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$f : N \to N, where f (x) = x - (- 1)^{x} . Then f is$

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detailed solution

Correct option is C

fx=x--1x fx = x-1 , if x is even = x+1 , if x is odd so it is one one and onto because f1=2 ,f2=1,f3=4, f4=3 .......etc.

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f:N→N, where f(x)=x−(−1)x . Then f is

Remember concepts with our Masterclasses.

Ready to Test Your Skills?

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$f : N \to N, where f (x) = x - (- 1)^{x} . Then f is$