A curve has equation $$\(y=3 \cos 2 x+2\)$$ for $$\(0 \leqslant x \leqslant \pi\)$$. Sketch the graph of $$\(y=3 \cos 2 x+2\)$$ for $$\(0 \leqslant x \leqslant \pi\)$$.

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