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Let `f: R->R` be the function defined by `f(x)=4x-3` for all `x in R` . Then write `f^(-1)` .

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We have,

`f: {R} rightarrow {R}` is the function defined by `{f}(x)=4 x-3` for all `x in {R}`

Let `{f}(x)=y`. Then,

`y=4 x-3 `

`Rightarrow 4 x=y+3 `

`Rightarrow x=frac{y+3}{4} `

`text { So, } f^{-1}(y)=frac{y+3}{4} `

...
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