题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001404-24245.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001404-62746.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001404-14880.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001405-80815.png)
(Ⅰ)求P点的纵坐标;
(Ⅱ)若
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001405-23343.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001405-92427.png)
(Ⅲ)记
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001405-28563.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001406-10206.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001406-42752.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001406-78430.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001405-80815.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001406-49742.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001406-29970.png)
解析
试题分析:(Ⅰ)求
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001407-46188.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001407-46188.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001404-14880.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001407-46188.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001407-47172.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001407-37137.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001407-36047.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001404-24245.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001408-46246.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001408-19610.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001407-46188.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001407-37137.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001408-45593.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001408-78294.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001405-23343.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001405-28563.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001406-10206.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001406-42752.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001406-78430.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001409-46398.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001406-49742.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001409-59335.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001406-42752.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001406-78430.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001409-79396.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001409-83176.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001409-46398.png)
试题解析:(Ⅰ)∵
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001409-88197.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001407-46188.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001407-47172.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001407-37137.png)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001410-75566.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001410-50537.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001410-78276.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001407-46188.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001405-80815.png)
(Ⅱ)由(Ⅰ)知
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001407-37137.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001408-19610.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001408-78294.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001416-39100.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001417-16999.png)
两式相加得
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001417-33886.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001417-53346.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001406-49742.png)
(Ⅲ)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001417-69746.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001418-38766.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001418-34162.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001418-83090.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001428-31194.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001429-52725.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001429-83296.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001429-63947.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001429-31155.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001358-17061.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001358-31889.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001358-55110.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001358-63151.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001339-31180.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001339-33808.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001340-10170.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001340-29204.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001340-11317.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001340-17358.png)
(1)证明:
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001340-11317.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001340-11317.png)
(2)记数列
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001340-36663.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001341-23586.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001341-17638.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001341-11771.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001341-83380.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001342-67082.png)
A.15 | B.18 | C.19 | D.23 |
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001303-40281.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001304-61608.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001304-36606.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001304-32797.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001304-30409.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001305-43733.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001305-80533.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001305-32426.png)
A.64 | B.128 | C.-64 | D.-128 |
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001242-64597.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001243-55819.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001243-83129.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001243-21993.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001243-83129.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001243-31048.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001244-15124.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001244-46812.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001244-38032.png)
(1)求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001242-64597.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001244-15124.png)
(2)设
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001244-86491.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001244-76296.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001243-55819.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001245-88051.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001245-54097.png)
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