1 . 函数
与
之间的关系非常密切,号称函数中的双子座,以下说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db0c0fb7d7810f3f95415e61621d07a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbe8383def220f92d50af7cc60ad9c37.png)
A.若![]() ![]() ![]() ![]() |
B.![]() |
C.直线![]() ![]() |
D.若直线![]() ![]() |
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2 . 抛物线
与y轴交于点A,
,顶点为D.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/18/5fd8d323-e143-4e18-9ba1-f23ac31b4cbf.png?resizew=132)
(1)若点A的坐标为(0,-2),求抛物线的顶点D和点P的坐标;
(2)如图,在(1)的条件下,连接AD,PD,在直线AD下方的抛物线上是否存在点N,满足
,若存在,请求出点N的坐标;若不存在,请说明理由;
(3)已知点
,若线段PQ与抛物线恰有1个交点,求m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e7025380bef07df5f62056160e6ea85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cab321e76d7c4c521cdc77d2d27c407.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/18/5fd8d323-e143-4e18-9ba1-f23ac31b4cbf.png?resizew=132)
(1)若点A的坐标为(0,-2),求抛物线的顶点D和点P的坐标;
(2)如图,在(1)的条件下,连接AD,PD,在直线AD下方的抛物线上是否存在点N,满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4742f5710314af955b8dd4e6ddfd7151.png)
(3)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5649ae59934da963ba37a37fdd0977ea.png)
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3 . 对于有限集
,如果存在函数
(
除外),其图像在区间D上是一段连续曲线,且满足
,其中
,那么称这个函数
是P变换,集合S是P集合,数列
,
,
,…,
,
是P数列.
例如,
是P集合,此时函数
是P变换,数列1,2,3或3,2,1等都是P数列.
(1)判断数列1,2,5,8,9是否是P数列?说明理由;
(2)若各项均为正数的递增数列
是P数列,若P变换
,求
的值;
(3)元素都是正数的有限集
,若
,总有
,其中
,
.试判断集合S是否是P集合?请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bc03f09d70cf1d5f795be460113683f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a18ca67c2770b98f36dbfd802595a95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18afe769b390cf22a2966f57433bd8b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dc638ead454671be2670181c69e7b58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30de4943aa77db7dc0b92b29b2aa93f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/681ae1522a36768618f7ddaf74abbb7e.png)
例如,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/862353b1d19b5e38a60c4ceeb2b01913.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f06c36bdce8f8aabfa43588e788c78f.png)
(1)判断数列1,2,5,8,9是否是P数列?说明理由;
(2)若各项均为正数的递增数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e676948d6ad2214846f47fe69a203a2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5024f1c5a1299a0e882a6af20478901.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e21103c30ed5a157ecd99ddd101b8e2c.png)
(3)元素都是正数的有限集
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bc03f09d70cf1d5f795be460113683f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/431acf301f0cf1e414b532de94708474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cef9f1a6fa4360433681655475ac70c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9612cb52aacd0b66fc1ba1297267c9c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09eb0632d3219f2b7cdcf04df8fe945a.png)
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解题方法
4 . 在平面直角坐标系
中,双曲线
的左顶点到右焦点的距离是
,且
的离心率是
.
(1)求双曲线
的标准方程;
(2)点
是
上位于第一象限的一点,点
、
关于原点
对称,点
、
关于
轴对称.延长
至
使得
,且直线
和
的另一个交点
位于第二象限中.
(i)求
的取值范围;
(ii)证明:
不可能是
的三等分线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a2cfa22139b3e9c9a73500e1ba19f52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
(1)求双曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb57bb18755127be041d346444a4743e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5f1fd3a94cddf909fe40f7d21f28899.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
(i)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
(ii)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac37366d2b54dc7d9a95ac6ddda5f3a8.png)
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5 . 三角函数的定义是:在单位圆C:
中,作一过圆心的射线与单位圆交于点P,自x轴正半轴开始逆时针旋转到达该射线时转过的角大小为θ,则P点坐标为
,转动中扫过的圆心角为θ的扇形,由圆弧面积公式和弧度角的定义,可知面积
.类似地对于双曲三角函数有这样的定义:在单位双曲线E:
中,过原点作一射线交右支于点P,该射线和x轴及双曲线围成的曲边三角形面积是
,双曲角
,则P的坐标是
.其中,
称为双曲余弦函数,
称为双曲正弦函数同样,有类似定义双曲正切函数
双曲余切函数
且有如下关系式:
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d279cc5e9f902480c9a0ea810cf9d3a.png)
,
的初等函数表达式.
(Ⅰ)双曲三角函数有如下和差公式,请任选其一进行证明:
①
;
②
;
(Ⅱ)①求函数
在R上的值域;
②若对
,关于x的方程
有解,求实数a的取值范围.
类似三角函数的反函数,试研究双曲三角函数的反函数artanhx,arcothx.
(2)①证明:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35b450e870513b9cf6021b6416959224.png)
②已知
的级数展开式为
,写出
的级数展开式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f240cccaf24af8a796abb95cb42be52e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b93ac1e1087ef8a7827e22983ab895f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33074bee68ff41ba4c6b675578f19957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e1fa37c4c826b5dcfebe86ab6177906.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/050c00da6d39ad0fae411836b0a26979.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15cd370bd2337b78fe820b7b61438c93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de2dc9ac6460d3c72e915e93b9f16d08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6e7c627427318b62d977ff7a86c2cb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a53b8e0108664bf39aa302570457199a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e1fe4e3a61667cfe81973a300859f97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a252d4a56c74a8829afb1fccbe09d81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0961cbc097652b999cd4106c671e4cd1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d279cc5e9f902480c9a0ea810cf9d3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a53b8e0108664bf39aa302570457199a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6e7c627427318b62d977ff7a86c2cb5.png)
(Ⅰ)双曲三角函数有如下和差公式,请任选其一进行证明:
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1079114cdde9367a22632b0165f1a1a8.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3510bba38a7f232cc4d9e437e78f5b6a.png)
(Ⅱ)①求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e154c56d574646a2a541a3fe70c6307b.png)
②若对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32f2372e3d0c3de8f5f0579312efe38b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/937c47cddd4b31aeacfad8f81705b827.png)
类似三角函数的反函数,试研究双曲三角函数的反函数artanhx,arcothx.
(2)①证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35b450e870513b9cf6021b6416959224.png)
②已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/802ae3e64c0bb802cc83bf3cf81bfe49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac1bbb717893d3adb6ce58b3a99bc257.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc0593e23740ebd0cd068a2eadf059e3.png)
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解题方法
6 . 已知函数
,将
的图像上所有点的横坐标变为原来的2倍,再向左平移
个单位长度,最后再把所有点的纵坐标伸长到原来的3倍,得到函数
的图象.
(1)求函数
的单调递增区间,并写出函数
的解析式;
(2)关于
的方程
在
内有两个不同的解
;
①求实数
的取值范围;
②用
的代数式表示
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b7ecff5c4200875c7655e505c57a103.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac1a63ab608517bb10aa036783dfb51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/028517e8bebe634441e0a5c79828e88a.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/028517e8bebe634441e0a5c79828e88a.png)
(2)关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7317f1f5bf19007cbf9bf46d1e4bcac4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e13623a74057edba789cff4ba85c5fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9146b7c16d81ccb92aef1e1f1788f00f.png)
①求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
②用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7241924141a25c43d7cd8288ddfd8501.png)
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7 . 抛物线
与x轴交于
,
两点,与y轴交于点C,直线
经过点B.点P在抛物线上,设点P的横坐标为m.
(1)求抛物线的表达式和
的值;
(2)如图1,连接AC,AP,PC,若△APC是以CP为斜边的直角三角形,求点P的坐标;
(3)如图2,若点P在直线BC上方的抛物线上,过点P作PQ⊥BC,垂足为Q,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40cdd28d8a7f857835dabdf14880bcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b5634528ca133fee203004bbc4789fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bda45b7f565147f18a5c83bb8a23142.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2617bc966d043c68fb601ebb815b4f3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/16/053546cc-f746-4e89-bd9d-5fc87c7323fa.png?resizew=259)
(1)求抛物线的表达式和
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bed0b65d9e19c2dd79eb60dabf76ee31.png)
(2)如图1,连接AC,AP,PC,若△APC是以CP为斜边的直角三角形,求点P的坐标;
(3)如图2,若点P在直线BC上方的抛物线上,过点P作PQ⊥BC,垂足为Q,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/841af1fa47393552ec6807526c8e5308.png)
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8 . 已知开口向上的抛物线
与x轴交于
两点,与y轴交于C点,
不小于90°.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/15/9bd4e3d7-9739-453a-ac19-3082df29974a.png?resizew=224)
(1)求点C的坐标(用含
的代数式表示);
(2)求系数
的取值范围;
(3)设抛物线的顶点为D,求
中CD边上的高h的最大值.
(4)设
,当
时,在线段AC上是否存在点F,使得直线EF将△ABC的面积平分?若存在,求出点F的坐标;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf49c761760a084725ce8fee4a670373.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fabb884dc5f9609de491245463bbe9a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/15/9bd4e3d7-9739-453a-ac19-3082df29974a.png?resizew=224)
(1)求点C的坐标(用含
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)求系数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)设抛物线的顶点为D,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
(4)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c839a403b587408be515dd2b4763ddd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
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9 . 图一所示,在平面直角坐标系中,抛物线
与x轴交于
,
两点,与y轴交于点C.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/22/60680793-2af4-4c55-a4e2-b4f9dc9eba59.png?resizew=120)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/22/f93df309-e8e7-4e20-b34d-80be466866ee.png?resizew=119)
(1)求抛物线的函数表达式及顶点坐标;
(2)点P为第三象限内抛物线上一动点,作直线AC,连接PA,PC,求
面积的最大值及此时点P的坐标;
(3)设直线
:
交抛物线于点M,N,求证:无论k为何值,平行于x轴的直线
:
上总存在一点E,使得
为直角.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/818ccf8040f189fff5665ec93892b2ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a525534689bd2701205d4ab17574c39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c850811ba59a05e945a665196539a048.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/22/60680793-2af4-4c55-a4e2-b4f9dc9eba59.png?resizew=120)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/22/f93df309-e8e7-4e20-b34d-80be466866ee.png?resizew=119)
(1)求抛物线的函数表达式及顶点坐标;
(2)点P为第三象限内抛物线上一动点,作直线AC,连接PA,PC,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fbfcae2cecc98e2d6c16dde6d3ec1c1.png)
(3)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff7cd2f34acbf4884ac6ea40b5d5be19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/216be086e1952cf1e782a7a3c132496e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/435f30095577dc714634354f5ad27715.png)
您最近一年使用:0次
解题方法
10 . 已知数列
的前n项和为
,若数列
满足:
①数列
为有穷数列;
②数列
为递增数列;
③
,
,
,使得
;
则称数列
具有“和性质”.
(1)已知
,求数列
的通项公式,并判断数列
是否具有“和性质”;(判断是否具有“和性质”时不必说明理由,直接给出结论)
(2)若首项为1的数列
具有“和性质”.
(ⅰ)比较
与
的大小关系,并说明理由;
(ⅱ)若数列
的末项为36,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
①数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
②数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd2ebecf4a0f024b9fcf300196c52493.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1b0d89736a10c53998013df4a354396.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/633ae47f41318cce995ee5c6e5db4ff3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4a28346a8cfbf7fa850ef66ec18365.png)
则称数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
(1)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2d5fe6e813fbe15a3693fdbec7ac622.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
(2)若首项为1的数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
(ⅰ)比较
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/121b94d71ab1ccbbce1a3e53bc7d421a.png)
(ⅱ)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
您最近一年使用:0次