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Let f : R \rightarrow R  be defined by f(x) = 1/x \forall x \in R  then f is 

(a) one-one (b) onto (c) bijective (d) f is not defined 

Answers (1)

(d)

Here, f(x) = 1/x 

Say, x = 0. Then f(x) = 1/0 = undefined

Hence, f(x) is not defined.

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