1.

Which of the following statement is true?(a) f: {1, 2, 3, 4} → {3, 4, 5}, the rule ‘add 2 to the elements of domain’ is not a function.(b) f: A → B, A = {-2, -1, 0, 1, 2}; B = {0, 1, 2, 3, 4}; f(x) = x2 is not a function.(c) g : P → Q, P = {-1, 0, 1}; Q = {\(-\frac{1}{3}\), -1, 3}; g (x) = \(\frac{x+2}{x−2}\). then g is called function.(d) g : {2, 3, 4, 5} → {-1, 0, 1) and g(x) = 4x – 3 is a function.

Answer»

Correct option is (a) f: {1, 2, 3, 4} → {3, 4, 5}, the rule ‘add 2 to the elements of domain’ is not a function.



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