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Let f: R->R^+ be defined by f(x)=a^x ,\ ...

Let `f: R->R^+` be defined by `f(x)=a^x ,\ a >0` and `a!=1` . Write `f^(-1)(x)` .

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`f(x)=a^{x} ldots ldots ldots[` Given `]`

So, `f(y)=a^{y}`

`{Let}^{-1}(x)=y`

`Rightarrow {f}({y})={x}`

`Rightarrow {a}^{{y}}={x} ldots ldots . . .[{From}(1)]`

...
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