对于任意实数a、b,用“※”定义新运算如下:
(1)
.如
.已知
的结果是6,求
的值.
(2)
.如
.已知
结果为
,求
的值.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9fea8f712a295beb70386a408cb6005.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35c7fee08ac4216c3ce8c88c64d2f164.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0897ff39452f2889b22ae60f49f20496.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe43fb843a66594f9b316608b6ae1b72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06ffcbbd23e80ed77b2a98df57494b70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40cb7bb9bf1735ec1a0c53d47db4637d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bb9c3c4713a57bdd1553dbf2c2a661f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
23-24八年级上·河南南阳·期中 查看更多[2]
更新时间:2023-12-11 22:22:20
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相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】我们知道,任意一个有理数与无理数的和为无理数,任意一个不为零的有理数与一个无理数的积为无理数,而零与无理数的积为零,由此可得:如果
,其中m,n为有理数,x为无理数,那么
,
,运用上述知识解决下列问题:
(1)若m,n为有理数,且
,求m,n的值;
(2)若m,n为有理数,且
,求
的立方根;
(3)若m,n为有理数,且
,则
______.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5c5262da479816fd7f246d3637856b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd876a2ed79c64bacc3e64b8ee92735e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfd09fb9482124fd35f19b86894648f4.png)
(1)若m,n为有理数,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/570ff1a92ebaebb3556b5da24c55fa45.png)
(2)若m,n为有理数,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16bbb7c4e13d25a0065ae40a0dfd68ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e2d073e0b067b819fd4bd211da5019.png)
(3)若m,n为有理数,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/058ff81729553f24106b503d13c66580.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77180fef23a077ea1be7b3a1b81a40b0.png)
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解答题-计算题
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适中
(0.65)
【推荐2】计算:
(1)
;
(2)已知
的整数部分为a,
的小数部分为b,求
的值.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/855c49eec3da2f8c8b7ade1615c16a81.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52fb33acd1203194cb6c24a75c10b5e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f322feb3814b978ac74168d97eb1ccd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbcb79c362bddb898f8a9d02a5f5d085.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐1】已知有序数对(a,b)及常数k,我们称有序数对(ka+b,a
b)为有序数对(a,b)的“k阶结伴数对”.如(3,2)的“1阶结伴数对”为(1×3+2,3
2)即(5,1).
(1)有序数对(
2,1)的“3阶结伴数对”为 ;
(2)若有序数对(a,b)的“2阶结伴数对”为(1,5),求a,b的值;
(3)若有序数对(a,b)(b≠0)的“k阶结伴数对”是它本身,求a,b的数量关系,并求出此时k的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bfc339cf6dd66599db64fa3fa44e608.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bfc339cf6dd66599db64fa3fa44e608.png)
(1)有序数对(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bfc339cf6dd66599db64fa3fa44e608.png)
(2)若有序数对(a,b)的“2阶结伴数对”为(1,5),求a,b的值;
(3)若有序数对(a,b)(b≠0)的“k阶结伴数对”是它本身,求a,b的数量关系,并求出此时k的值.
您最近一年使用:0次
解答题-计算题
|
适中
(0.65)
【推荐2】知识再现:我们知道幂的运算法则有4条,分别是①
,②
,③
,④
,反过来,这4条运算法则可以写成:①
,②
,③
,④
.
问题解决:已知
,且b满足等式
.
(1)求a,b的值.
(2)化简代数式
,并求当
,
时,该代数式的值.
(3)对于任意两个实数m,n,我们规定
,例如
,根据这个新运算规则,化简
,并求当
,
时的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e292f6cad34792482e437c225789bef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1055c570c02a10fe841f7f9ce3cc1d6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb26335d6837b9096e18c530c8276b1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4f90b2005d07028d7f17b0b7d8a41d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a8d4a856d2e483510947aea7c4330da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d6f39280fba5256aa98b61c589e7476.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3890fced9f340b4399f03f50713eb6b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ed78e24caeba0de7c10936aa7c7974.png)
问题解决:已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eaf98b9857f61424e82868ee04d379b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80ad93dbb82fbae5e3962742976ec547.png)
(1)求a,b的值.
(2)化简代数式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e2928d3a72e5e3c6336f5133d8f4c85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e74951da95eddc7ade3f45daa4cfa5bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f49141513efbb9d9d0ddd5f4a6736898.png)
(3)对于任意两个实数m,n,我们规定
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4cd28dc90fe3ea637ce110fab164ea4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/077c1b4c1cae53b799890d8a688dc926.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37401812b9563d13be2bac830d68f02f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49e66424eb2db81e0008cd3af87e9491.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/949c237b83eafdd7219b27c89489dc5f.png)
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