(1)已知
,求
的值;
(2)已知
,求
的值.
(3)已知a、b是方程x2-6x+4=0的两根,且
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/225dc2c912c3d7e95245772ca402d66a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c314a223984d075f1be0fdbe92c680a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(3)已知a、b是方程x2-6x+4=0的两根,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e6796f35c292fed4d85921e0d462c74.png)
更新时间:2021-12-17 20:49:29
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相似题推荐
解答题-问答题
|
较易
(0.85)
【推荐1】把下列指数式写成对数式,对数式写成指数式:
(1)
;
(2)
;
(3)
;
(4)
;
(5)
;
(6)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/feae878a430a1b23774127547d842cb6.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22080f3910da3c072c286f7fa4cf7452.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dccdcb494b5d5466e46246c1f80b3147.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ecfa27ffa534a8968b4f7dfa71211e.png)
(5)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/539124eaf91cfea8ef34a401940221d3.png)
(6)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3930d8bc99580b23ba9ea2c91ec12b8a.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
【推荐2】将下列指数式与对数式互化:
(1)log216=4; (2)log
27=-3;
(3)
=6; (4)43=64;
(5)3-2=
(6)
=16.
(1)log216=4; (2)log
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/453694345eb8c011838e68cb6021751d.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f65b466bc666e0b3b84e5e460bc6273.png)
(5)3-2=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/158b045c6172c4178d7aa52083e1489f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0024f43c949e5d49ca4602c84b65e3c5.png)
您最近一年使用:0次