已知
,
,且
<
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/702a9a384ccb9937fecaa38b4f8c6c87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfb728d4dd619984c683c3ad7b77b676.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/f245033acc950131640e718c4d598aa9.png)
更新时间:2019-11-07 16:18:25
|
相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】如图,若点
、
在数轴上分别表示有理数
、
,
、
两点之间的距离表示为
.则
.所以式子
的几何意义是数轴上表示有理数
的点与表示有理数
的点之间的距离.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/10/d56d0336-18cf-4854-a712-99f7145fbdd2.png?resizew=160)
根据上述材料,解答下列问题:
(1)若
,则
;
(2)若
,则
;
(3)式子
的最小值为 ;
(4)若
,则
;
(5)式子
的最小值为 ,此时
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f26c45b1c50349cb0e320dd627e2094d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed5294800caf4b17e7031d974ff2f1b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/10/d56d0336-18cf-4854-a712-99f7145fbdd2.png?resizew=160)
根据上述材料,解答下列问题:
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/794cc67745c3003486c38e68b3317993.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0a50ca96dcd0338b6455397e0528375.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
(3)式子
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/968a979bc4acb925e5644fbe5e92bfee.png)
(4)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba9f9b25db7471e6a73103b9303547a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
(5)式子
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fffd38166f732b00402464b381327af5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】已知
互为倒数,
互为相反数,
.
(1)根据已知条件回答:
______,
______,
______;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62ff2912fd8d93b6e692936d95b727c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63927ad0d12a6e0ad4bec5b90caec48e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb35983bcf0333337d569a7b146742d8.png)
(1)根据已知条件回答:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4753f4a4456d0df13843b71015bfa14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/834cfa98a546738567ecbf4f7c9d83e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/089f8ede46835a0d5ec4096e64f5db97.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff261f70a3152370d5add419c1cf5b5e.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐1】如果a是100的算术平方根,b是125的立方根,求
的平方根.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec615407b834d9c02f1c1194a99df2b6.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】对于任意一个实数
,我们用
表示小于
的最大整数.
例如:
,
;
.
(1)填空:
,
,
;
(2)若
,
都是整数,且
,
,求
的平方根;
(3)如果
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eee49c86c7abaea7e4a306c1faa4b0f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
例如:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e191653be833665b43a24d2621f7e4c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdcd44e5639c5f7241bbde9a8b0b53c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/350a7911a7ba48c77201b14d92193cd2.png)
(1)填空:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb57df1d19eaa739f8de81b8587dd98e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/910e1abb53796e0c25a3b8a8305dd57e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77d96890422dcea8d8ad90be6b8fc436.png)
(2)若
![](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/8baaf70e1e02a4ea240114c208a74b1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2ec0c05e9f3c6d53173bf5659da1c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b68c5b2bfc31ce3af72042c117f7f44.png)
(3)如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6735c52bc81093d2fa30dfbb9d4617da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐1】某粮食仓库4天内进出库吨数记录如下:(“+”表示进库.“-”表示出库)(单位:吨):+5,
,
,+3,
,+7.
(1)经过这4天,粮食仓库里的粮食是增多了还是减少了?增多或减少了多少吨?
(2)如果进仓库的粮食每吨运费为a元,出仓库的粮食每吨运费为1.5a元,那么这4天共要付运费多少元?
(3)求出当
元时,这4天共要付运费多少元?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3edbd40e04e2a943051fa83d6e511add.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01317332a203c898536b1d0459f51d23.png)
(1)经过这4天,粮食仓库里的粮食是增多了还是减少了?增多或减少了多少吨?
(2)如果进仓库的粮食每吨运费为a元,出仓库的粮食每吨运费为1.5a元,那么这4天共要付运费多少元?
(3)求出当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6f9592eabfc91de9786e9f564338eea.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】(1)已知
、
是有理数,且满足:
的立方根是-2,
的平方是25,求
的值;
(2)已知当
时,代数式
值为18,求代数式
的值.
![](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/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5d6c3d38e6d514f65dd6dee0e6c55b3.png)
(2)已知当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99c6875d552e9fff3c7d655f3a59b166.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6bc169c22c3cad186cd3da6cc6fa4a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ffd6151d54b2cd1b5c1a070044be7b.png)
您最近一年使用:0次