The diagram shows the graph of $$\(y=\mathrm{f}(x)\)$$, where $$\(\mathrm{f}(x)=\frac{3}{2} \cos 2 x+\frac{1}{2}\)$$ for $$\(0 \leqslant x \leqslant \pi\)$$. State the equation of the curve which is the reflection of $$\(y=\mathrm{f}(x)\)$$ in the $$\(x\)$$-axis. Give your answer in the form $$\(y=a \cos 2 x+b\)$$, where $$\(a\)$$ and $$\(b\)$$ are constants. ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................

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