某制糖厂第一年制糖5万吨.如果平均每年的产量比上一年增加10%,那么从第一年起,约几年内可使总产量达到30万吨(保留到个位)?(参考数据:
.)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcea73811a794f4e4ef9f140e76784a9.png)
20-21高二·全国·课后作业 查看更多[2]
更新时间:2021-11-05 09:00:27
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解答题-问答题
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【推荐1】求下列各式的值.
(1)
;
(2)
;
(3)
;
(4)
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(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daeea114dbbc1b466640e6dd6c1548b7.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b391dc4ae8360dfbb45a6489cbfbf27.png)
(3)
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(4)
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解答题-证明题
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【推荐1】在△ABC中,内角
所对的边分别为
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(Ⅰ)求证:
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(Ⅱ)若
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![](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/0cc58e5d3f9ec18c5e8960584e7549a6.png)
(Ⅰ)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4551fc4199b2bf3e0370e9b5633eb3ff.png)
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解题方法
【推荐1】已知数列
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
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解答题-问答题
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解题方法
【推荐2】已知等差数列
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