Sequences & Series (id: 74b66466a)

本题目来源于试卷: Sequences & Series，类别为 IB数学

[填空题]
Consider the infinite geocqhaq3i2yp1 6metric sequence ix nkt9,oek61 4480,-3360,2520,-1890, ...
1. Find the common ratio, r .   
2. Find the 20 th term.≈   
3. Find the exact sum of the infinite sequence.   

参考答案:
空格1: -0.75±2%  空格2: -18.9±2%  空格3: 2560±2% 


本题详细解析:

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