help ….….….question is attached

help ….….….question is attached

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1 Answers

Harsh Patodia IIT Roorkee
askIITians Faculty 907 Points
9 years ago
Hi Student
From the given information we can find f(x)-g(x) as follows
f(x) -g(x) = x when x is rational
= -x when x is irrational
so clealry there is no overlapping of values hence it will clearly will one-one and also in codomain each elemnt will have pre-image. Hence it will be onto also.

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