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            • 1. 根据如图所示的程序框图,将输出的\(x\),\(y\)依次记为\(x_{1}\),\(x_{2}\),\(…\),\(x_{2016}\),\(y_{1}\),\(y_{2}\),\(…\),\(y_{2016}\).

                  \((1)\)求出数列\(\{x_{n}\}\),\(\{y_{n}\}\)的通项公式;

              \((2)\)求数列\(\{x_{n}+y_{n}\}(n\leqslant 2016)\)的前\(n\)项和\(S_{n}\).

            • 2.

              若各项均为正数的数列\(\{a_{n}\}\)的前\(n\)项和为\(S_{n}\),且\(2 \sqrt[]{S_{n}}=a_{n}+1 (n∈N*)\).

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

              \((2)\)若正项等比数列\(\{b_{n}\}\),满足\(b_{2}=2\),\(2b_{7}+b_{8}=b_{9}\),求\(T_{n}=a_{1}b_{1}+a_{2}b_{2}+…+a_{n}b_{n}\);

              \((3)\)对于\((2)\)中的\(T_{n}\),若对任意的\(n∈N^{*}\),不等式\(λ·(-1)^{n} < \dfrac{1}{2^{n+1}}(T_{n}+21)\)恒成立,求实数\(λ\)的取值范围.

            • 3.

              在等差数列\(\{{{a}_{n}}\}\)中,\({{a}_{2}}+{{a}_{7}}=-23\),\({{a}_{3}}+{{a}_{8}}=-29\).

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

              \((2)\)设数列\(\{{{a}_{n}}+{{b}_{n}}\}\)是首项为\(1\),公比为\(q\)的等比数列,求\(\{{{b}_{n}}\}\)的前\(n\)项和\({{S}_{n}}\).

            • 4.
              一个等差数列的前\(12\)项的和为\(354\),前\(12\)项中偶数项的和与奇数项的和的比为\(32∶27\),求该数列的公差\(d\).
            • 5.

              设等差数列\(\{a_{n}\}\)的公差\(d > 0\),若\({{a}_{1}}+{{a}_{2}}+{{a}_{3}}=-9\),\({{a}_{1}}{{a}_{2}}{{a}_{3}}=-15\).

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

              \((2)\)求数列\(\{a_{n}\}\)的前\(n\)项和\({{s}_{n}};\)

              \((3)\)试求所有的正整数\(m\),使得\(\dfrac{{{a}_{m}}{{a}_{m+1}}}{{{a}_{m+2}}}\)为数列\(\left\{ {{a}_{n}} \right\}\)中的项.

            • 6.

              用分期付款的方式购买家用电器需\(11500\)元,购买当天先付\(1500\)元,以后每月交付\(500\)元,并加付利息,月利率为\(0.5\%\),若从交付\(1500\)元后的第\(1\)个月开始算分期付款的第\(1\)个月,问:

              \((1)\)分期付款的第\(10\)个月应交付多少钱?

              \((2)\)全部贷款付清后,买家用电器实际花了多少钱?

            • 7.

              等比数列\(\{a_{n}\}\)中,已知\(a_{1}=2\),\(a_{4}=16\).

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

              \((2)\)若\(a_{3}\),\(a_{5}\)分别为等差数列\(\{b_{n}\}\)第\(3\)项和第\(5\)项,求数列\(\{b_{n}\}\)的通项公式及前\(n\)项和\(S_{n}\).

            • 8.

              已知等差数列\(\{a_{n}\}\)的公差\(d\)为整数,且\(a_{k}=k^{2}+2\),\(a_{2k}=(k+2)^{2}\),其中\(k\)为常数且\(k∈N^{*}\).

              \((1)\) 求\(k\)及\(a_{n};\)

              \((2)\) 设\(a_{1} > 1\),等差数列\(\{a_{n}\}\)的前\(n\)项和为\(S_{n}\),等比数列\(\{b_{n}\}\)的首项为\(1\)、公比为\(q(q > 0)\),前\(n\)项和为\(T_{n}.\)若存在正整数\(m\),使得\(\dfrac{S_{2}}{S_{m}}=T_{3}\),求\(q\)的值.

            • 9.

              已知等差数列\(\{\)\({a}_{n}\)\(\}\)中,若\({S}_{2}\)\(=16\),\({S}_{4}\)\(=24\),求数列\(\{|\)\({a}_{n}\)\(|\}\)的前\(n\)项和\({T}_{n}\)

            • 10.

              已知数列\(\{ a_{n}\}\)的前\(n\)项和为\(S_{n}{,}a_{1}{=}\dfrac{1}{2}{,}2a_{n{+}1}{=}S_{n}{+}1\).

              \((\)Ⅰ\()\)求\(a_{2}{,}a_{3}\)的值;

              \((\)Ⅱ\()\)设\(b_{n}{=}2a_{n}{-}2n{-}1\),求数列\(\{ b_{n}\}\)的前\(n\)项和\(T_{n}\).

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