1 . 解下列关于x、y、z的方程组:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dd00923d5a8e5670674429cce415b98.png)
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2 . 解方程组
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a44aa87e89ab9ff4bd1621f80abc68ac.png)
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3 . 求方程组
的所有实数解.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88858ab423ea405988872c040e333127.png)
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4 . 方程组
的解的组数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5ab0c7b6b0fb725f3cb7399445ba4fa.png)
A.5 | B.6 | C.7 | D.8 |
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5 . 若实数
使得对于每一个实数
,关于
的方程组
总有实数解,则
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1f3ddcacfcb5c9e90f1fda03c7bbaf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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6 . 已知方程组
的解为
和
则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14d4051d09c53a1aaba2a5a163f2cf73.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/650c0eeab66ae6d419a60370639b9a49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c5ea91edea7b5c202b34854c2597bc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a081187c5ffb1db6c6d894a8caedaca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14d4051d09c53a1aaba2a5a163f2cf73.png)
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7 . 方程组
的解
共有组.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b740f7f376f200993a09ffe56d0fa8a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0203b006524305c3d8ee0b6c34cd872b.png)
A.4 | B.2 | C.1 | D.0 |
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8 . 解方程组:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4235df43a31bd03a916f3628151503dd.png)
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9 . 方程组
的解为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e623ba91d9055beda518f76cad15f03c.png)
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名校
10 . 符号
表示不大于
的最大整数(
),例如:
,
,
.
(1)解下列两个方程:
,
;
(2)分别研究当
,
时,不等式
是否成立,并说明理由;
(3)求方程
的实数解.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4f5908d6a1217e493ed7586b6964dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb63478132d4c1fef3c17e591919da83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0582aa1aa68e686d214659b220d2f3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3420606c96b68fb884c839923fd20a25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf813e9500eebd474511b865b876ea4a.png)
(1)解下列两个方程:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c38da3ff65e3aa467094a04c37979d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63b8b4a9dde8d4922793103ba4dee705.png)
(2)分别研究当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e541ea2f855f981c96207070683d388.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db90a7aca842313e694567eecd0def88.png)
(3)求方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/265e32e36165952c4a525ee91be92fff.png)
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