名校
1 . 已知![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc15afdd916f20f9c0ed49526bca5d2b.png)
(Ⅰ)求
的值;
(Ⅱ)若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc15afdd916f20f9c0ed49526bca5d2b.png)
(Ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ace6dde9651ac2caaff53a25abebaae5.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc3e6ef71227c18361eab917be85116e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eacde1c42151734fdc60f3001b590de.png)
您最近一年使用:0次
2020-03-04更新
|
970次组卷
|
5卷引用:四川省遂宁市2018-2019学年高一下学期期末数学试题
名校
解题方法
2 . 已知等差数列
的首项为
,公差为
,前n项和为
,且满足
,
.
(1)证明
;
(2)若
,
,当且仅当
时,
取得最小值,求首项
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84fb5a72b4a8c473ec05a2bbe2199062.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/532f0b684d80fa42ac32ca5d1a770424.png)
(1)证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/893e54804c54e9c1d1b68d302c9ffcaa.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9c9c60d228a82a012e5898ff6beac27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d667406567227e5cf1c73b5eaf57c52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294250dbd576bff3da0a1456cb9a88a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2020-03-03更新
|
469次组卷
|
2卷引用:江西省南昌市2018-2019学年高一下学期期末数学试题
3 . 如图,在
中,
,点D在BC边上,且
.
![](https://img.xkw.com/dksih/QBM/2020/2/27/2408112914382848/2409668533501952/STEM/3cc4379b7f414bfb8fa565d61fbea5af.png?resizew=98)
(1)求
;
(2)求AC的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9906b267ba01f7f7a04ad7ea8ce44737.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b100b07f0c7341c06afc69405bbe8c05.png)
![](https://img.xkw.com/dksih/QBM/2020/2/27/2408112914382848/2409668533501952/STEM/3cc4379b7f414bfb8fa565d61fbea5af.png?resizew=98)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c44ce799d9835933017b9cac05ed6077.png)
(2)求AC的长.
您最近一年使用:0次
2020-02-29更新
|
244次组卷
|
3卷引用:江西省南昌八中、南昌二十三中等四校2018-2019学年高一下学期期中联考数学试题
名校
4 . 已知函数
.
(1)求
的最小正周期;
(2)求
的单调递减区间以及在区间
上的最值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4043fff51bd2ce1b1ae9be18d83a1bfa.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/577f6bf9ca5ddb21e650eefbeb5249d8.png)
您最近一年使用:0次
2020-02-25更新
|
341次组卷
|
3卷引用:江西省吉安市2019-2020学年高一上学期期末数学试题
名校
解题方法
5 . 已知函数
.
(1)函数
取得最大值或最小值时的
组成集合
,将集合
中
的所有
的值,从小到大排成一数列,记为
,求数列
的通项公式;
(2)令
,求数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dce1e77f8edc0857cb470125b0b5d4f2.png)
(1)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cc4136bd17997e11a7f8abcb19f9018.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffd79f44ff8c48e118bd206e9bd00cf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
您最近一年使用:0次
名校
解题方法
6 . 已知
,
,
.
(1)求
的值.
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15100cab0a8f1fb3a2668fb0d20ef38f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a077ceccea768ed3c664d38d55242fbd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8febe21078f09e154aceaa850458f85d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6f90c4754e6b6fc862d72943fb35569.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/258f7dd295360a0fa22a811dcffa3ac1.png)
您最近一年使用:0次
2020-02-17更新
|
510次组卷
|
6卷引用:湖北省武汉市(第一中学、第三中学等六校)2019-2020学年高一上学期期末联考数学试题
名校
解题方法
7 . 在
ABC中,角A,B,C所对的边分别为a,b,c,且asinAcosC+csinAcosA=
c.
(1)若c=1,sinC=
,求
ABC的面积S;
(2)若D是AC的中点,且cosB=
,BD=
,求
ABC的三边长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
(1)若c=1,sinC=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
(2)若D是AC的中点,且cosB=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9868f77d5ab5073b6145f1c6d272122e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6df397b5075ae27f938b780936fd718c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
您最近一年使用:0次
2020-02-12更新
|
1047次组卷
|
2卷引用:江西省新余市渝水区第一中学2019-2020学年高二上学期第二次段考数学(理)试题
名校
8 . 已知
中,内角
所对边分别为
,若
.
(1)求角
的大小;
(2)若
, 求
的面积S.
![](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/3d06c1c347d9cc59e3b0955094cceb7d.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28881a3b3e4bddded432b29980a14a93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2020-01-12更新
|
736次组卷
|
3卷引用:江西省赣州市崇义县崇义中学2019-2020学年高一下学期开学考试数学(文)试题
名校
9 . 已知
为锐角,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cadbeba6f7b7266ed0380c0e49c7cb5.png)
(1)求
的值;
(2)求
的值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e288596fa3811dd2c17bded60e82e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cadbeba6f7b7266ed0380c0e49c7cb5.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0b4f4cd0b9c4cfed756bc8d58c9caf1.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd927b4b5a7875528c1b54aa4bb8b2dd.png)
您最近一年使用:0次
2019-12-07更新
|
1191次组卷
|
3卷引用:江西省南昌市新建一中2019-2020学年高一上学期期末数学试题
名校
10 . 已知函数
,
.
(1)求函数
的单调递增区间;
(2)若
,求
的最大值和最小值,并指出
取得最值时相应
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e3733a609476fd76663fe193074c415.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5ef35b4eb3901e250e015a7afe8f56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
您最近一年使用:0次
2019-11-06更新
|
329次组卷
|
2卷引用:人教A版(2019) 必修第一册 突围者 第五章 第六节函数