Change Log for CFA 2019 Level I Date Lesson and Content Identifier Change 02/21/2019 SS2 Quantitative Methods (1) / R9 Probability Concepts / Lesson / Study Text Example 2.3 Page www.efficientlearning.com/support/updates 01/29/2019 SS17 Fixed Income (2) / R54 Understanding Fixed-Income Risk and Return / Lesson / Study Text Equation should read: ApproxCon = (PV−) + (PV+) − [2 × (PV0)] (ΔYield)2 × (PV0) Page www.efficientlearning.com/support/updates ... Fixed Income (2) / R54 Understanding Fixed-Income Risk and Return / Lesson / Study Text Equation should read: ApproxCon = (PV−) + (PV+) − [2 × (PV0)] (ΔYield)2 × (PV0) Page www.efficientlearning.com/support/updates