1 . 解决下列问题:
(1).求值:
;
(2).若
,
,求
的值.
(1).求值:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba4f3e869c7e72449a4d87cdd90dc2d8.png)
(2).若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca542e78b7d77d008c9c4752afa91a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e0133e558923166de6326733f43133e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b28449461d18047d86f0b09c2f50dbb3.png)
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2 . (1)化简
;
(2)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/453cf86d99deba8707cc7d1a234ca30e.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/429f5951ab3d567111287cacef707af1.png)
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3 . 计算化简下列各题:
(1)
;
(2)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b904bdfeb79fd8cc03bec158774331a.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17916c7abad61f5d598e079fb528c0ae.png)
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4 . 计算求值:
(1)计算:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee1701784ed8b83a93f144d7d4d28645.png)
(2)已知实数
满足
,求
的值.
(1)计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee1701784ed8b83a93f144d7d4d28645.png)
(2)已知实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8bcfcaf67354b1159d7f37c696c62d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dffa1bc883c05df9a4705d187267fc42.png)
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5 . (1)求值
;
(2)已知
为正实数,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851296b7415e2c88ff379ca1ade7b588.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62219f94134bea1959b03cf9d4993b2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d2d7ddd7ef3b6cde30018bc6a84b9e0.png)
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6 . 计算下列各式(式中字母均是正数).
(1)求值:
;
(2)化简:
.
(1)求值:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c74d49678a38294d0a93c520b69a949.png)
(2)化简:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0aba9ca9d8326ec0a1b3fcf9ff3e392.png)
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7 . 化简:
(1)
;
(2)
.
(3)计算
;
(4)若
,
,用a,b,表示
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab074579c562849bd07952acea0af67a.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11e8ece1e69d22c3e167cfb65c920eab.png)
(3)计算
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0041184ed7ff01179d62227a02a5e9df.png)
(4)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/364d6bb1ad79c981fc11f408d5620f5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1348202e22f9c5a35b89c05cea58a90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13aac2585429d9a4d063644e737f629f.png)
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解题方法
8 . 若
,则
取得最小值时
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ab69fe9b1cc6b6e1de6b5991b2efa5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/219ba6c8a1b54598db1a78cab28d9d30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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9 . 计算:
(1)
.
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d1eda86f61f0214b7e164a3532b187b.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c2db858d4b609c7af23855f4ad5d99a.png)
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2023-12-14更新
|
732次组卷
|
2卷引用:山东省菏泽市单县第二中学2021-2022学年高三上学期美术生期末数学试题
10 . 化简或计算下列各式:
(1)
;
(2)
;
(3)已知
,
,用
、
表示
;
(4)已知
,求
的值.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c86ce8a046169ced1a5cccb9b44ee4c8.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff0ba3237bac78776b6be5b8242faca9.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a08a2a5540efcdb5a77aa4ea3049884.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/850df3e299d9b1ecbda7e3a59e2a255e.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/b4e679588b85d84a96167c731a33008c.png)
(4)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ddcbbc305c84916e4fbaf0cb9460d5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fb9b836fd5af2a082b5a9898a116b33.png)
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