Take ln: −10k = ln(2/3) ≈ ln(0.6667) ≈ −0.4055 → k ≈ 0.04055. - AMAZONAWS Understanding the Natural Logarithm: How Take-Ln Solves −10k = ln(2/3) 📅 March 6, 2026 👤 scraface Mar 06, 2026