a_n = a_1 \cdot r^{n-1}

Fri, 17 Apr 2026 20:05:45 +0000

### Understanding the Geometric Sequence Formula: an = a₁ · rⁿ⁻¹ The formula aₙ = a₁ · rⁿ⁻¹ is a cornerstone of mathematics, particularly in algebra and sequences. Whether you’re a student studying algebra or a teacher explaining exponential progression, understanding this formula is essential for mastering patterns in numbers and solving real-world problems. --- #### What is a Geometric Sequence?