已知
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6329c811e18c5c27238f063cf473a2ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39e3f763c76f921e81012f3a9f5f66d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20963ba030ac60209f0d4a86c30c4474.png)
更新时间:2023-03-18 17:52:33
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相似题推荐
解答题-问答题
|
较易
(0.85)
【推荐2】阅读下列材料:下面是底数大于1的数比较大小的两种方法.
①比较
,
的大小;当
时,
,
当同底数相同时,指数越大值越大;
②比较
和
的大小,
,
,
,
.可以将其先化为同指数,再比较大小,
指数相同时,底数越大值越大;
根据上述材料,回答下列问题.
(1)比较大小
____________
(填写>、<或=);
(2)已知
,
,
,试比较
、
、
的大小.
①比较
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27def65b46225ac64b02a19aa5911489.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c0d2b7d558996d2e2a2ed1ce3011d7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432d77fe5ad3032d59a237dd94c8a638.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54969adfe007f7dacf556c4c863670b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de0d10ef8b748d4531250c37c5d3f9e.png)
②比较
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaaea4bba81d95bf975dc2e07d28a83c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6267eb36ab79a07e4996e8d4cc881e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ce9b6ace7aae16178f934f6714c0dd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/120329e7cecfe866b4b600b6becbcbb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98cfe591151c9ec3358c1cffc3eb57fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d153585a0372554da6964a427582f50a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de0d10ef8b748d4531250c37c5d3f9e.png)
根据上述材料,回答下列问题.
(1)比较大小
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4a44ddbdf4cd5c6003b688a4b49d844.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35928e2c1e11ae0bb429bb6e25f910dc.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f9618be9a485e94b26d6199326e7005.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1a97d60d1a26f2d5cc94f066448cd0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9b091da6cbfd0cd35fd043f92c1f365.png)
![](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/071a7e733d466949ac935b4b8ee8d183.png)
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