Geometric mean of 4 and 12?

2018-07-25 11:29 am

回答 (3)

2018-07-25 11:49 am
Let m be the geometric mean of 4 and 12.

Common ratio:
m/4 = 12/m
m² = 48
m = √48 or m = -√48
m = 4√3 or m = -4√3

The geometric mean is 4√3 or -4√3.
2018-07-25 11:32 am
The geometric mean of a and b is √(ab)

√(4 * 12)
= √48
= √16 * √3
= 4√3

Answer:
4√3
2018-07-25 3:24 pm
The geometric mean of 4 and 12:
4 sqrt(3) ≈ 6.9282


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