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科目:高中數(shù)學(xué)
來源:不詳
題型:解答題
(本小題滿分10分)已知向量
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.
(1)若
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求
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的值;
(2)設(shè)
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,求
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的取值范圍.
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科目:高中數(shù)學(xué)
來源:不詳
題型:解答題
(本小題滿分15分)
設(shè)函數(shù)
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,其中向量
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,
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,
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,且
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的圖象經(jīng)過點
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.
(Ⅰ)求實數(shù)
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的值;
(Ⅱ)求函數(shù)
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的最小值及此時
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值的集合.
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科目:高中數(shù)學(xué)
來源:不詳
題型:解答題
求證
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(10分)
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科目:高中數(shù)學(xué)
來源:不詳
題型:單選題
將函數(shù)
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的圖象向左平移
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個單位長度
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,所得函數(shù)的解析式是( )
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科目:高中數(shù)學(xué)
來源:不詳
題型:單選題
己知
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,且
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是第二象限角,
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是第四象
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限角,那么sin(
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)等于( )
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科目:高中數(shù)學(xué)
來源:不詳
題型:單選題
已知
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,則
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( )
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