计算:cos 60°-3tan30°+tan60°+2sin245°.
更新时间:2016-12-05 16:23:59
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【知识点】 初中数学综合库
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解答题-问答题
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较易
(0.85)
【推荐1】某超市进了一批优质水果,出售时在进价(进货的价格)的基础上加上一定的利润,其数量
与售价
的关系如下表︰
(1)求出售价
与商品数量
之间的关系式.
(2)王阿姨想买这种水果
,她应付款多少元?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
数量 | 1 | 2 | 3 | 4 | 5 | ⋯ |
售价 | ⋯ |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)王阿姨想买这种水果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/357b57ca632ee18181ea4d9e860a4620.png)
您最近一年使用:0次
解答题-计算题
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较易
(0.85)
【推荐2】计算:
(1)
;
(2)
;
(3)
;
(4)
;
(5)
;
(6)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a1803e4e5454097c303de763e5b9f91.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb8cb3f245396904f0e42a690fb4b1cb.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9af18ebac484c9a9cf0dc99e8603405.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb408b2636074400b5eb074f7acc1789.png)
(5)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b9790b51dac229acca279449c2063e6.png)
(6)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8931b9d7c4d33dbf644f0a346727ca74.png)
您最近一年使用:0次