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　次の(1)，(2)を解答せよ．
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\item[(1)]$\log_2 3$と$\log_3 4$の大小を比較せよ．
\item[(2)]$\displaystyle\cos\frac{2}{9}\pi+\cos\frac{4}{9}\pi+\cos\frac{8}{9}\pi+
\cos\frac{10}{9}\pi+\cos\frac{14}{9}\pi+\cos\frac{16}{9}\pi$の値を求めよ．
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