The sum of infinity of a geometric series is 16. If the second term is 4, what is r and the first term? - Quora
![Prove the Infinite Geometric Series Formula: Sum(ar^n) = a/(1 - r) | Geometric series, Series formula, Studying math Prove the Infinite Geometric Series Formula: Sum(ar^n) = a/(1 - r) | Geometric series, Series formula, Studying math](https://i.pinimg.com/originals/36/a0/8f/36a08f38876d64a91db5f1a4341d146a.jpg)
Prove the Infinite Geometric Series Formula: Sum(ar^n) = a/(1 - r) | Geometric series, Series formula, Studying math
![Infinite Geometric Series. Common Formula (Finite & Infinite) | by Solomon Xie | Calculus Basics | Medium Infinite Geometric Series. Common Formula (Finite & Infinite) | by Solomon Xie | Calculus Basics | Medium](https://miro.medium.com/v2/resize:fit:400/0*hc0TqAkJNA-uJy55.png)
Infinite Geometric Series. Common Formula (Finite & Infinite) | by Solomon Xie | Calculus Basics | Medium
![Sum of Infinite Geometric Series | Formula, Sequence & Examples - Video & Lesson Transcript | Study.com Sum of Infinite Geometric Series | Formula, Sequence & Examples - Video & Lesson Transcript | Study.com](https://study.com/cimages/videopreview/screen_shot_2014-06-12_at_7.26.53_pm_125282.jpg)
Sum of Infinite Geometric Series | Formula, Sequence & Examples - Video & Lesson Transcript | Study.com
![The sum of an infinite geometric series is 15 and the sum of the squares of these terms is 45. The first term of the series is The sum of an infinite geometric series is 15 and the sum of the squares of these terms is 45. The first term of the series is](https://haygot.s3.amazonaws.com/questions/1846197_1711420_ans_b9fcc169e22d4ca3a3de302951380b38.jpg)