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Question

If y = f : A  B, then which of the following is true if f(x) is a function in x.

(i) x must be able to take each and every value of A

(ii) one value of x must be related to one and only one value of y in set B. 
 


  1. Only (ii)

  2. Both (i) and (ii)

  3. None of these

  4. Only (i)


Solution

The correct option is B

Both (i) and (ii)


Both (i) and (ii) are part of the definition of function.( (i) and (ii) together forms the definition of function)

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