题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095615-86397.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095616-27023.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095616-23493.png)
命题
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095616-37172.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095616-27023.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095616-58709.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095617-31732.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095616-23493.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095617-50433.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095617-50178.png)
⑴若
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095616-37172.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095616-58709.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095617-50178.png)
⑵对于⑴中的
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095617-11600.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095618-59666.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095616-37172.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095616-58709.png)
⑶若
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095616-37172.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095616-23493.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095618-25085.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095616-27023.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095618-43424.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095615-86397.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095618-62207.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095619-79512.png)
解析
试题分析:(1)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095616-27023.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095619-76992.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095617-31732.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095616-23493.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095619-86314.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095617-31732.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095616-23493.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095617-50433.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095616-23493.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095616-23493.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095619-81571.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095619-51350.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095620-47437.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095616-23493.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095620-33634.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095620-73226.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095620-75940.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095620-51029.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095621-99239.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095616-23493.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095616-27023.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095618-43424.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095621-34054.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095621-99239.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095621-69613.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095621-64030.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095622-36688.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095616-23493.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095621-34054.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095622-54528.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095622-20662.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095622-67614.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095621-34054.png)
试题解析:(1)设
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095621-99239.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095622-36688.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095622-40925.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095623-37685.png)
即
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095623-81108.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095623-68098.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095618-62207.png)
(2)当
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095618-62207.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095616-37172.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095616-58709.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095624-86395.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095616-23493.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095623-68098.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095621-99239.png)
当
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095624-12840.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095624-18532.png)
当
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095624-36574.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095624-14440.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095619-51350.png)
即
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095620-47437.png)
当
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095625-68199.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095625-51659.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095625-47864.png)
当
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095625-30406.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095620-33634.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095620-51029.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095621-99239.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095616-37172.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095616-58709.png)
(3)由
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095625-31172.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095621-69613.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095621-64030.png)
设数列
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095621-99239.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095622-36688.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095626-24857.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095626-16720.png)
所以
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095626-12744.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095626-66207.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095627-54157.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095627-36378.png)
所以
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095621-34054.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095619-79512.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095621-34054.png)
核心考点
试题【设是各项均为非零实数的数列的前项和,给出如下两个命题上:命题:是等差数列;命题:等式对任意()恒成立,其中是常数。⑴若是的充分条件,求的值;⑵对于⑴中的与,问是】;主要考察你对等差数列等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095532-77127.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095532-88059.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095532-46466.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095437-21819.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095437-40595.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095438-98798.png)
(Ⅰ)求
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095437-21819.png)
(Ⅱ)设
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095438-11204.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095438-25483.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095438-14380.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095439-20877.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095439-20467.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095439-33622.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095422-42437.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095423-33498.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095423-93167.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095406-65239.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095407-19293.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095407-88128.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095407-51826.png)
(1)求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095406-65239.png)
(2)数列满足
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095408-72732.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095408-72669.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095346-79866.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095346-91855.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095346-66617.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009095346-23191.png)
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