在各项均为正数的等差数列
中,若
,则
的最小值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9141bba25395e47f6c90bfd7117154d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0475d5fa910e4d24f850a1b7d0111ac0.png)
更新时间:2023-01-29 20:45:12
|
相似题推荐
填空题-单空题
|
适中
(0.65)
解题方法
【推荐1】若函数
在区间
上有最大值,则实数
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64d1f6f459292de1002f863203ce91a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47f3fc4c2731581d2b3a4e5861e66450.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
填空题-单空题
|
适中
(0.65)
名校
【推荐2】已知变量
(m>0),且
,若
恒成立,则m的最大值________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3c98af41aeeb14a6f915648666201be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dd7ca7fa2715d8134e6b87de77d58bb.png)
您最近一年使用:0次
填空题-单空题
|
适中
(0.65)
名校
【推荐3】若函数
有最大值,则实数a的取值范围是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8462c42f421100f9c3e9f5dcad85af4.png)
您最近一年使用:0次
填空题-单空题
|
适中
(0.65)
【推荐1】若函数
=
的图像关于直线
对称,则
的最小值是______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://img.xkw.com/dksih/QBM/2016/5/4/1572614444613632/1572614450307072/STEM/b359f96668e04d4bb7e7ea0ed73d62c3.png?resizew=155)
![](https://img.xkw.com/dksih/QBM/2016/5/4/1572614444613632/1572614450307072/STEM/adc00c80a7ce455e9bd1c18b4939810a.png?resizew=35)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
您最近一年使用:0次
填空题-双空题
|
适中
(0.65)
名校
解题方法
【推荐2】已知直三棱柱
,则三棱柱
的体积的最大值为__________ ;此时棱柱的高为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dca372da7838265832b761428775bfd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
您最近一年使用:0次
填空题-单空题
|
适中
(0.65)
【推荐3】已知曲线
和
,若直线
与这两条曲线都相交,交点分别为
,则
的最小值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d42dec8eda0ef90bdbe112e82b993e0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdad8acb5f4d31bfee990bf844b1a37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36d71f015144ffaf1faec94a259b4a06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/084cf5ffced059f5653ee2a1023518b7.png)
您最近一年使用:0次
填空题-单空题
|
适中
(0.65)
名校
解题方法
【推荐1】已知等差数列
的前
项和为
,若
,
,则数列
的前2021项和为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced4e381e8c3336848b8c436dbc584f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b2395ccadbeb8353ead0d573ca02c25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba57c83d526ac308d1461e80fcca9f36.png)
您最近一年使用:0次
填空题-单空题
|
适中
(0.65)
【推荐2】已知等差数列{an}的前n项和为Sn,若
=9,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3abc464d1fbf913c77cc38c23e533548.png)
_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afdfdb9c3e43452e7550eeb9c4d1b509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3abc464d1fbf913c77cc38c23e533548.png)
您最近一年使用:0次
填空题-单空题
|
适中
(0.65)
解题方法
【推荐1】设等差数列
的前
项和为
,若
,则
=_______ .
![](https://img.xkw.com/dksih/QBM/2016/6/21/1572754529492992/1572754535735296/STEM/2b8447320ea742c09235024baa548059.png?resizew=31)
![](https://img.xkw.com/dksih/QBM/2016/6/21/1572754529492992/1572754535735296/STEM/1d6aba7c30ca4303a7145b9082c165b6.png?resizew=13)
![](https://img.xkw.com/dksih/QBM/2016/6/21/1572754529492992/1572754535735296/STEM/1b5b70d9fbb24381b6649581cd10aad7.png?resizew=20)
![](https://img.xkw.com/dksih/QBM/2016/6/21/1572754529492992/1572754535735296/STEM/b5499b1621c848b0a801417eced52da1.png?resizew=156)
![](https://img.xkw.com/dksih/QBM/2016/6/21/1572754529492992/1572754535735296/STEM/c44e16cf44bf4f6db841c85b205d97fb.png?resizew=23)
您最近一年使用:0次
填空题-单空题
|
适中
(0.65)
名校
解题方法
【推荐2】已知等差数列
的通项公式为
,当且仅当
时,数列
的前
项和
最大.则满足
的
的最大值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55fc868111f288887d72c1003bf37620.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe08722cf9300fe188dbbb71989c06c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/005b4e99ab406b0a80b68debe8bd2913.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次