<p>若等比数列<img src="https://file.gaojiufeng.cn/learnAppQuestion/3e/39/3e39eeba58c51e56295928d84a70da5d.png" style="width: 100%;height: auto;">的公比为<img src="https://file.gaojiufeng.cn/learnAppQuestion/23/22/2322718a107a9c32423c8a668d012a5d.png" style="width: 100%;height: auto;">则<img src="https://file.gaojiufeng.cn/learnAppQuestion/be/0a/be0a1b319771b12976d2f4a47f75a310.png" style="width: 100%;height: auto;">()。</p>