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            • 1.

              已知数列\(\left\{ {{a}_{n}} \right\}\)的前\(n\)项和\({{S}_{n}}\)满足:\({{S}_{n}}=1-{{a}_{n}}\).

              \((1)\)求\(\left\{ {{a}_{n}} \right\}\)的通项公式;

              \((2)\)设\({{c}_{n}}=4{{a}_{n}}+1\),求数列\(\left\{ {{c}_{n}} \right\}\)的前\(n\)项和\({{T}_{n}}\).

            • 2.

              设数列\(\{a_{n}\}\)的前\(n\)项和为\(S_{n}\),若\(2\),\(S_{n}\),\(3a_{n}\)成等差数列,则\(S_{5}\)的值是\((\)    \()\)

              A.\(-243\)
              B.\(243\)
              C.\(-162\)
              D.\(-242\)
            • 3.

              把数列\(\left\{ \dfrac{1}{2n-1} \right\}\)的所有项按照从大到小的顺序写成如下数表:第\(k\)行有\(2^{k-1}\)个数,第\(t\)行的第\(s\)个数\((\)从左数起\()\)记为\(A(t,s)\),则\(A(6,10)=\)________.

            • 4.

              已知\(f(x)\),\(g(x)\)都是定义在\(R\)上的函数,\(g(x)\neq 0\),\(f(x)g{{'}}(x) > f{{'}}(x)g(x)\),\(f(x)={a}^{x}·g(x)(a > 0,a\neq 0) \),\( \dfrac{f(1)}{g(1)}+ \dfrac{f(-1)}{g(-1)}= \dfrac{5}{2} \),在有穷数列\(\{ \dfrac{f(n)}{g(n)}\}(n=1,2⋯10) \)中,任意取正整数\(k(1\leqslant k\leqslant 10) \),则前\(k\)项和大于\( \dfrac{15}{16} \)的概率是__________.

            • 5.

              \((1)\)已知直线的倾斜角的范围是\(\alpha \in \left[ \dfrac{\pi }{4},\dfrac{\pi }{2} \right]\),则此直线的斜率\(k\)的取值范围是_______.

              \((2)\)若等比数列\(\left\{ {{a}_{n}} \right\}\)满足\({{a}_{2}}+{{a}_{4}}=20,{{a}_{3}}+{{a}_{5}}=40\),则前\(n\)项\({{S}_{n}}=\) ___     __.

              \((3)\)如图,在四边形\(ABCD\)中,已知\(AD\)\(⊥\)\(CD\)\(AD\)\(=10\),\(AB\)\(=14\),\(∠\)\(BDA\)\(=60^{\circ}\),\(∠\)\(BCD\)\(=135^{\circ}\),则\(BC\)的长为_______.

              \((4)\)已知三棱柱\(ABC-A_{1}B_{1}C_{1}\)的\(6\)个顶点都在球\(O\)的球面上,若\(AB=3\),\(AC=4\),\(AB⊥AC\),\(AA_{1}=12\),则球\(O\)的半径为_______.

            • 6.

              已知数列\(\left\{ {{a}_{n}} \right\}\)满足\({{a}_{1}} =1\),\({{a}_{n+1}}=3{{a}_{n}}+1\) .

              \((\)Ⅰ\()\)证明\(\left\{ {{a}_{n}}+\dfrac{1}{2} \right\}\)是等比数列,并求\(\left\{ {{a}_{n}} \right\}\)的通项公式;

              \((\)Ⅱ\()\)证明:\(\dfrac{1}{{{a}_{1}}}+\dfrac{1}{{{a}_{2}}}+\ldots +\dfrac{1}{{{a}_{n}}} < \dfrac{3}{2}\) .

            • 7.

              \((1)\)已知点\(P(x,y)\)的坐标满足条件\(\begin{cases}x+y\leqslant 4 \\ y\geqslant x \\ x\geqslant 1\end{cases} \),则\(x^{2}+y^{2}\)的最大值为________。

              \((2)\)已知数列\({a_{n}}\)满足\(a_{1}=1\),\(a_{n}-a_{n-1}=2^{n-1}(n\geqslant 2)\),则\(a_{8}=\)________.

              \((3)\)已知四面体\(ABCD\)的每个顶点都在球\(O\)的球面上,\(AD⊥\)底面\(ABC\),\(AB=BC=CA=3\),\(AD=2\),则球\(O\)的表面积为________.

              \((4)\)设\(x\),\(y∈R\),定义\(x⊗ y=x(a-y)(a∈R\),且\(a\)为常数\()\),若\(f(x)=e^{x}\),\(g(x)=e^{-x}+2x^{2}\),\(F(x)=f(x)⊗ g(x)\).

              \(①g(x)\)不存在极值;

              \(②\)若\(f(x)\)的反函数为\(h(x)\),且函数\(y=kx\)与函数\(y=|h(x)|\)有两个交点,则\(k= \dfrac{1}{e} \);

              \(③\)若\(F(x)\)在\(R\)上是减函数,则实数\(a\)的取值范围是\((-∞,-2]\);

              \(④\)若\(a=-3\),在\(F(x)\)的曲线上存在两点,使得过这两点的切线互相垂直.

              其中真命题的序号有________\((\)把所有真命题序号写上\()\).

            • 8.

              已知数列\(\{a_{n}\}\)中的前\(n\)项和为\({{S}_{n}}=\dfrac{{{n}^{2}}+n}{2}\),又\(a_{n}=\log _{2}b_{n}\).

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

              \((2)\)求数列\(\{b_{n}\}\)的前\(n\)项和\(T_{n}\).

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