The functions $$\(f\)$$ and $$\(g\)$$ are defined as (a) Write down the value of $$\(x\)$$ that must be excluded from any domain of $$\(g\)$$ (1) (b) Find $$\(\operatorname{gf}(2.6)\)$$ (2) (c) Solve $$\(\operatorname{fg}(x)=2\)$$ $$\[ x= \]$$ (3) (d) Express the inverse function $$\(\mathrm{g}^{-1}\)$$ in the form $$\(\mathrm{g}^{-1}: x \mapsto \ldots\)$$ $$\[ \mathrm{g}^{-1}: x \mapsto \]$$ (3)

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