Geometric mean
Sequences, series and the binomial theorem · Mathematics
Study notes
Q: Find the GM of 4 and 9. Insert 2 geometric means between 3 and 24. Part A: GM = √(4×9) = √36 = 6. Part B: r = (24/3)^(1/3) = 8^(1/3) = 2. Means: 6, 12. Check: 3, 6, 12, 24 is a GP ✓.