函數(shù)
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的圖象恒過定點
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,
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在冪函數(shù)
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的圖象上,則
.
函數(shù)
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的圖象恒過定點
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,即點
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。
設(shè)
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,則
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,所以
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,
所以
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。
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科目:高中數(shù)學
來源:不詳
題型:解答題
(1)計算 2(lg
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)
2+lg
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·lg5+
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;
(2)已知tan
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=
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, 求
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的值
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科目:高中數(shù)學
來源:不詳
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函數(shù)

的圖象恒過定點A,若點A在直線

上,其中

,則
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的最小值為
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科目:高中數(shù)學
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計算下列各式:(本題滿分10分)
(1)(本小題滿分5分)
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;
(2)(本小題題滿分5分)
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.
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科目:高中數(shù)學
來源:不詳
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將函數(shù)

的圖象上每一點的縱坐標不變,橫坐標變?yōu)樵瓉淼?img src="http://thumb.zyjl.cn/pic2/upload/papers/20140823/20140823202040732592.png" style="vertical-align:middle;" />倍,得到圖象C,若將

的圖象向上平移2個單位,也得到圖象C,則

_______
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科目:高中數(shù)學
來源:不詳
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已知
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是定義在
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上的奇函數(shù),且當
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時不等式
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成立,若
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,
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
,則
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大小關(guān)系是
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科目:高中數(shù)學
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設(shè)
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科目:高中數(shù)學
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函數(shù)
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的值域為( )
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