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Let`f"":""N rarr Y`be a function defined as `f""(x)""=""4x""+""3`, where `Y""=""{y in N"":""y""=""4x""+""3`for some `x in N}`. Show that f is invertibleand its inverse is(1) `g(y)=(3y+4)/3`(2) `g(y)=4+(y+3)/4`(3) `g(y)=(y+3)/4`(4) `g(y)=(y-3)/4`

Answer» `F(x)=4x+3`
`F(x)-3=4x`
`x=(F(x)-3)/4`
`F^-1(x)=(x-3)/4`
`g(y)/N=(y-3)/4`
`y=4x+3`
`g(y)=(y-3)/4`is the answer


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