ChallengeChallengeCircles & Lines ShareCircles & Lines · Challenge problemLet a1=2a_1 = 2a1=2 and an+1=an−1an+1a_{n+1} = \dfrac{a_n - 1}{a_n + 1}an+1=an+1an−1 for n≥1n \ge 1n≥1. What is a2025a_{2025}a2025?A−3-3−3B−12-\frac{1}{2}−21C222D−13-\frac{1}{3}−31E13\frac{1}{3}31Check Show answer Walk through it step by step Practice more like this Review this concept