已知
,
,
.
(1)求
的值;
(2)若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8f55b8836b41be612a52ca9caf97006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0022b7a6e7fc48046177f1475e97b0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f162fe3969ecfcd254bed59791f586f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e1a601216ec7f21f10d06224013e339.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/481e744af0f65e797a35d976c20f2dac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ba781b7dafa6870b89c06ac56299d5d.png)
23-24高三上·广东·阶段练习 查看更多[2]
更新时间:2023-10-20 07:46:29
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解答题-问答题
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适中
(0.65)
解题方法
【推荐1】在
中,已知
,最长边的长为
.
(1)求
的大小;
(2)若
,求最短边的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ac69d254f6bb6050ff68995e3ceca39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e20838e72faf737614d76fcee82ab6c5.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71e225f3edd6ae15f3e70d07a91ce748.png)
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【推荐2】已知
,求下列各式的值
(1)
;
(2)
;
(3)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f125fd53e1adb7b35d7d69692bb34953.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab8abaeacacbfcb1b4f0f2f08ae1650c.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c80dd81a3f8944e322cd1d736079f6a.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e92d3182a7f4037807c10cd9c78e39d.png)
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适中
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【推荐1】已知关于
的方程
的两根为
和
,其中![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef001eeef468ca21ac0cbb23fd135657.png)
(1)求
的值;
(2)求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfdfcd8c75831c5eff5522958f265526.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82dd7b187325223cbdb305e0a283cb09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7e929de074ad2524c21bf4e5f454ea6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef001eeef468ca21ac0cbb23fd135657.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a990d433d4716e0fe7bdaa811e7a0dda.png)
(2)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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解答题-问答题
|
适中
(0.65)
解题方法
【推荐2】已知
.
(1)化简:
;
(2)若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e5c9dd749202f50f605cc804bedbe1f.png)
(1)化简:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d081730b57bcc19741cdd4e56e1b0ea1.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b4e30d0c8106d0f962413f408202a79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc96146b36fb33977f16d9c94990594a.png)
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解答题-问答题
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适中
(0.65)
【推荐3】已知向量
,
.
(1)若
时,求
与
夹角的余弦值;
(2)当
且
时,若
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6569e50f43b3d8645652ecc13b62066e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e58a6f96b94312a0919d563554ce4cf7.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b18026bb38b30472517eac05ce8c6a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b91254db5ff748150f449c5cdd256c.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12f102439ebd1efd422f04209ecec2bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa5aa846a5b7c96fe2ce665eb1ea5f0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fbe2212c10c3da621f550e8c6409bd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14f65044c12d07e5f37b5e0e68d9f5af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8114e78ac5798c981a09a8d282875f99.png)
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名校
【推荐2】已知函数
是定义在
上的偶函数,当
时,
.
(1)求
时,函数
的解析式;
(2)已知f(
-α)=
,f(
+β)=-
,α∈(
,
),β∈(0,
),求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/440b2e5cd4b3e07347c6135b36c699cb.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e541ea2f855f981c96207070683d388.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)已知f(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9955b5aebb73cd84447e8541f901ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c55e4f3eda94bc505f103b10bc1fee7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c54fc6601f0dd2d9719047af13bf48dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5785fc61ee4b81825ff77857a3c02518.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9955b5aebb73cd84447e8541f901ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3b199d124fb9a5bc8438c9884f04534.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9955b5aebb73cd84447e8541f901ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22771f4f97f2fefa3d9936438e7c38a7.png)
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解答题-问答题
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适中
(0.65)
解题方法
【推荐1】函数
,
的部分图象如图所示.
![](https://img.xkw.com/dksih/QBM/2022/4/22/2963682592808960/2964276891787264/STEM/07514377-acfc-4649-ab1e-108c59fb8597.png?resizew=188)
(1)确定
的值,并写出函数
解析式;
(2)描述函数
的图象可由函数
的图象经过怎样的变换而得到;
(3)若
(
),求
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ec89c3bc454d209007c2b29baeeb3b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e773f2889043c0f4191b8baf84372055.png)
![](https://img.xkw.com/dksih/QBM/2022/4/22/2963682592808960/2964276891787264/STEM/07514377-acfc-4649-ab1e-108c59fb8597.png?resizew=188)
(1)确定
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5b651c83ed280b34e1144bd7b22dd04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)描述函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2b9643da0c0fea4f099f9a9133d6076.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1051d6460f2a705a81ed686110f32f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3afd39048073e3e2397c9b7251e4edd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42c58cf68b1adf185495010e5ac31e70.png)
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解答题-应用题
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适中
(0.65)
解题方法
【推荐2】足球是一项很受欢迎的体育运动.如图,某标准足球场的
底线宽
码,球门宽
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处(
,
)时,根据场上形势判断,有
、
两条进攻线路可供选择.
![](https://img.xkw.com/dksih/QBM/2023/8/20/3306723843989504/3325591383351296/STEM/ff5a5bdb2e48443dbbaf592f19a62fd7.png?resizew=180)
(1)若选择线路
,则甲带球多少码时,到达最佳射门位置;
(2)若选择线路
,则甲带球多少码时,到达最佳射门位置.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c5ed31bf5f2a8c8c5f5487bb6296bf4.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfa70e7c9ef8b856b494d370b7d76482.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09cf17ee13e937cd8b84879da17d15b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ac747fa7e033b09ab20370fd27d5be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4f605ec0729ce6d72237ad662a06862.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fc9656d8286c4d6fa309d6ae347c89e.png)
![](https://img.xkw.com/dksih/QBM/2023/8/20/3306723843989504/3325591383351296/STEM/ff5a5bdb2e48443dbbaf592f19a62fd7.png?resizew=180)
(1)若选择线路
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4f605ec0729ce6d72237ad662a06862.png)
(2)若选择线路
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fc9656d8286c4d6fa309d6ae347c89e.png)
您最近一年使用:0次