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Let f:NtoY be a function defined as f(x)...

Let `f:NtoY` be a function defined as `f(x)=4x+3`, where `Y={yinN,y=4x+3` for some `x inN`}.
Show that f is invertible and its inverse is :

A

`g(y)=(y-3)/(4)`

B

`g(y)=(3y+4)/(3)`

C

`g(y)=4+(y+3)/(4)`

D

`g(y)=(y+3)/(4)`

Text Solution

Verified by Experts

The correct Answer is:
A
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