计算:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc78fd53924a1ff1d481e02435732ebf.png)
更新时间:2017-08-18 17:30:14
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解答题-计算题
|
适中
(0.65)
名校
【推荐1】(1)计算:
;
(2)先化简,再求值:
,其中
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9930cfde807943d64d56bde9e0d0e096.png)
(2)先化简,再求值:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68f216fec7e22f515dbfce6e85e4af30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eefa44964db83759aff6fc8dd7ef8f28.png)
您最近一年使用:0次
解答题-计算题
|
适中
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解题方法
【推荐2】定义新运算:对于任意
,
,都有
,等式右边是通常的加法、减法、乘法及乘方运算,比如:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b3c53f020018ba430dea134cd08f693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a63e8ca2d78034a3b65541aaf02e53e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcf423b5183195010b8d674854c35ee5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffc31a901b4a5280fe07533a61f90548.png)
(1)求
的值.
(2)化简
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df9debbeec9092ceceeef84d5dfadc31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b3c53f020018ba430dea134cd08f693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a63e8ca2d78034a3b65541aaf02e53e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcf423b5183195010b8d674854c35ee5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffc31a901b4a5280fe07533a61f90548.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/991a1b706695dc8683b5d8a3517f52e0.png)
(2)化简
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb4c600ccf94363089750093c40b7a88.png)
您最近一年使用:0次
解答题-计算题
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适中
(0.65)
【推荐1】计算:2cos60°﹣(﹣3)﹣3+(π﹣
)0﹣|﹣2|.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
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解答题-计算题
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【推荐2】(1)计算:|﹣
|﹣2sin45°﹣(
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)0+
;
(2)化简:(
﹣2)÷
﹣2x,其中x为x2+3x﹣10=0的解.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd4cee6655a37fc8243928b5dbb09fd4.png)
(2)化简:(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cb5d19e6da4e461986eb69ee5d14f6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e7383974fa183621fc072575b88d306.png)
您最近一年使用:0次