已知復(fù)數(shù)
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,
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,求復(fù)數(shù)
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實(shí)部的最值.
最大值為
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,最小值為
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試題分析:由已知得
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2分
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4分
所以
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的實(shí)部為
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6分
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8分
所以
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10分
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. 12分
點(diǎn)評:解決本小題的關(guān)鍵是求出實(shí)部后,通過化簡三角函數(shù),根據(jù)三角函數(shù)的圖象和性質(zhì)求出最值.
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