名校
解题方法
1 . 已知向量
,
,若
∥
,则实数
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a4feb69960d2b619ee013c029be051a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d99d783fd3bf6fa0aa7891c583a7e32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ac6d24d01d4c5660c0acd2f8cdd5cda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4a52459c7b04a72e88147458459b17b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2022-11-10更新
|
572次组卷
|
4卷引用:福建省永安第九中学2023届高三上学期期中考试数学试题
名校
解题方法
2 . 已知函数
.
(1)求函数
的最小正周期和单调递减区间;
(2)在锐角三角形ABC中,角A,B,C所对的边分别为a,b,c,若
,
,
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2b4e5a705b1e110566906af409c4934.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)在锐角三角形ABC中,角A,B,C所对的边分别为a,b,c,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88fbe8a814eb023254f37adc50a515c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa4c355f11471a38f5583a434a1ddeb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4c5cd6ce30ac70cd343334139c1a478.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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2022-11-10更新
|
253次组卷
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2卷引用:福建省泉州市剑影实验学校2022届高三上学期期中考试数学试题
名校
解题方法
3 . 在
中,内角A,B,C所对的边分别为a,b,c,已知
.
(1)求角B的大小;
(2)若
的面积
,求
的值并判断
的形状.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4a3ee883d82bea8e114bcaf6ee2b8e6.png)
(1)求角B的大小;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0f7a10407a1388b876f7df4cb3d95ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11f787941cb1abfe9bb757276b765c0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2022-11-10更新
|
322次组卷
|
2卷引用:福建省泉州市剑影实验学校2022届高三上学期期中考试数学试题
名校
解题方法
4 . 函数
零点的个数为
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecdc408774fdb29ed6ef2633c3301ed2.png)
![](https://img.xkw.com/dksih/QBM/2022/11/9/3105810622906368/3106513924808704/STEM/ec3a25b38c58438d826e6964aeffebce.png?resizew=4)
A.2 | B.3 | C.4 | D.5 |
您最近一年使用:0次
2022-11-10更新
|
900次组卷
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2卷引用:福建省泉州市剑影实验学校2022届高三上学期期中考试数学试题
解题方法
5 . 向量
,
若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1052ff143b54c7a2be1477c5b06fd0b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/052bccf6adc3ab9b9e1c55d0b9426fbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/882691bd6f125c41577da996493660fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
您最近一年使用:0次
名校
解题方法
6 . 已知函数
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/716fbe14f968b13ef0a37b1fd73efb62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93d7c94b99e52d548aa3737f3d14f9f2.png)
A.0 | B.1 | C.2 | D.3 |
您最近一年使用:0次
2022-11-10更新
|
380次组卷
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2卷引用:福建省三明市宁化滨江实验中学2022届高三上学期期中考试数学试题
名校
解题方法
7 . 已知函数
.
(1)证明:函数
的图象与直线
只有一个公共点;
(2)证明:对任意的
,
;
(3)若
恒成立,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7159e60d2b9d109b2543eb6aba7071e1.png)
(1)证明:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
(2)证明:对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a37a59558292ad6b3d0978bfd7484990.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67a89210cf3fda807166c5f03e9831b8.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3516c9df36097a79027e380e40e3a0ad.png)
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2022-11-10更新
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316次组卷
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2卷引用:福建省泉州一中、南安一中2023届高三上学期期中考试数学试题
解题方法
8 . 在斜三棱柱
中,
为等腰直角三角形,
,侧面
为菱形,且
,点
为棱
的中点,
,平面
平面
.设平面
与平面
的交线为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/12/ba99d19b-5d1f-43e2-ba69-67f430609705.png?resizew=194)
(1)作出交线
,并说明作法;
(2)证明:平面
平面
;
(3)求二面角
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cc6184b191e6da43911e701121517e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/900e00a3609e6043af1034761d4d65f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a696a182fff038a86b2bbe8ca099442.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ecc1c7a4c9280932881d18e660fcf23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf91e975a64261d11c78753800963ef0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cc6184b191e6da43911e701121517e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b886daa3c9bb7153acd9f651f99eb2c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/12/ba99d19b-5d1f-43e2-ba69-67f430609705.png?resizew=194)
(1)作出交线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(2)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50d9bdbbdfabc737323692c796e41930.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(3)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d19abb3d4ea91d34a705a84506771bb9.png)
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9 . 已知数列
的前n项和为
,且
是公差为
的等差数列.
(1)求证:
是等差数列;
(2)用
表示
中的最大值,若
,
,求数列
的前n项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b422e62615c58135652ae709b33d4c9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad213c5e3744cc472ffca85a6a87dd82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cd5371a6f0f82c65dd22f75f8b807c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15bee7b4d077107a39d43da948e00ca8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec4bdc2a6d4fc387dc621f0b5a268c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
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10 . 在①
;②
;③
这三个条件中任选一个补充在下面的问题中,并加以解答.
在
中,角
的对边分别为
.已知
,且________________.
(1)求角
;
(2)若满足条件的
恰有两个,求边
的取值范围;
(3)若
为
中点,
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64e51e0b527e823e684ea5ef5156e2ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/281a8c7018b06e3cab96a5c43a49cf64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ef048e82de3713e095ceab57aec4e23.png)
在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/077c956ac0eb05cf120e14f17413dfa2.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若满足条件的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/204fb7cfd350a616164c68ec109880ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次