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            • 1.

              \((1)\)曲线经过点\((2 \sqrt{2},1) \),其一条渐近线方程为\(y= \dfrac{1}{2}x \),该双曲线的标准方程为_________.

              \((2)D\)为\(\triangle ABC\)的边\(BC\)上一点,\(\overrightarrow{DC}=-2\overrightarrow{DB}\),过\(D\)点的直线分别交直线\(AB\)、\(AC\)于\(E\)、\(F\),若\(\overrightarrow{AE}=λ\overrightarrow{AB}\),\(\overrightarrow{AF}=μ\overrightarrow{AC}\),其中\(λ > 0\),\(μ > 0\),则\( \dfrac{2}{λ}+ \dfrac{1}{μ}=\)________.

              \((3)\)已知向量\(\overrightarrow{AB}\),\(\overrightarrow{AC}\),\(\overrightarrow{AD}\)满足\(\overrightarrow{AC}=\overrightarrow{AB}+\overrightarrow{AD}\),\(|\overrightarrow{AB}|=2\),\(|\overrightarrow{AD}|=1\),\(E\),\(F\)分别是线段\(BC\),\(CD\)的中点,若\(\overrightarrow{DE}·\overrightarrow{BF}=- \dfrac{5}{4}\),则向量\(\overrightarrow{AB}\)与\(\overrightarrow{AD}\)的夹角为________.

              \((4)\)已知数列\(\left\{ {{a}_{n}} \right\}\)中,\({{a}_{1}}=1,{{a}_{n+1}}=2{{a}_{n}}+n-1\left( n\in {{N}^{*}} \right)\),则其前\(n\)项和\({{S}_{n}}{=}\)_________.

            • 2.

              在等比数列\(\{a_{n}\}\)中,已知\(a_{3}+a_{6}=36\),\(a_{4}+a_{7}=18\),\({{a}_{n}}=\dfrac{{1}}{{2}}\),求\(n\)的值.

            • 3. 在数列\(\{a_{n}\}\)中,\(a_{1}=1\),\(a_{n+1}=2a_{n}+2^{n}\);
              \((1)\)设\(b_{n}= \dfrac {a_{n}}{2^{n-1}}.\)证明:数列\(\{b_{n}\}\)是等差数列;
              \((2)\)求数列\(\{a_{n}\}\)的通项公式.
            • 4.

              已知各项均为正数的数列\(\{a_{n}\}\)的前\(n\)项和为\(S_{n}\),且点\((a_{n},a_{n+1})(n∈N^{*})\)在函数\(y=3x\)的图象上,\(S_{3}=26\).

                  \((1)\)求数列\(\{a_{n}\}\)的通项公式;

                  \((2)\)在\(a_{n}\)与\(a_{n+1}\)之间插入\(n\)个数,使这\(n+2\)个数组成公差为\(d_{n}\)的等差数列,求数列\(\left\{ \dfrac{{1}}{{{d}_{n}}} \right\}\)的前\(n\)项和\(T_{n}\).

            • 5.

              一个项数为偶数的等比数列\(\{a_{n}\}\),全部各项之和为偶数项之和的\(4\)倍,前\(3\)项之积为\(64\),则\(a_{1}=(\)  \()\)

              A.\(11\)                                                              
              B.\(12\)

              C.\(13\)                                                           
              D.\(14\)
            • 6.

              已知数列\(\left\{ {{a}_{n}} \right\}\)满足\({{a}_{1}}=\dfrac{3}{2},{{a}_{n+1}}=3{{a}_{n}}-1\left( n\in {{N}^{*}} \right).\)

              \((1)\)若数列\(\left\{ {{b}_{n}} \right\}\)满足\({{b}_{n}}={{a}_{n}}-\dfrac{1}{2}\),求证:\(\left\{ {{b}_{n}} \right\}\)是等比数列;

              \((2)\)求数列\(\left\{ {{a}_{n}} \right\}\)的\(n\)项和\({{S}_{n}}.\)

            • 7.

              设数列\(\{a_{n}\}\)的前\(n\)现和为\(S_{n}\),数列\(\{S_{n}\}\)的前\(n\)项和为\(T_{n}\),满足\(T_{n}=2S_{n}-n^{2}\),\(n∈N^{*}\).

              \((1)\)求\(a_{1}\)的值;

              \((2)\)求数列\(\{a_{n}\}\)的通项公式.

            • 8.

              已知各项均为正数的等比数列\(\{ a_{n}\}{,}a_{3}{⋅}a_{5}{=}2\),若\(f(x){=}x(x{-}a_{1})(x{-}a_{2}){…}(x{-}a_{7})\),则

              A.\(8\sqrt{2}\)
              B.\({-}8\sqrt{2}\)
              C.\(128\)                            
              D.\({-}128\)
            • 9.

              已知等比数列\(\{a_{n}\}\)的公比\(q=-3\),则\( \dfrac{a_{1}+a_{3}+a_{5}+a_{7}}{a_{2}+a_{4}+a_{6}+a_{8}}=(\)  \()\)

              A.\(- \dfrac{1}{3}\)
              B.\(-3\)
              C.\( \dfrac{1}{3}\)
              D.\(3\)
            • 10.

              设等比数列\(\{a_{n}\}\)的前\(n\)项积为\(l{l}_{9} \),若\(l{l}_{16}=512l{l}_{7} \),则\(a_{12}\)的值是__________.

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