The geometric mean of 'A' and 'B' is the square root of ( A x B ).
Edit:
The geometric mean of n positive numbers, x1, x2, ... , xn is the nth root of x1*x2* ... *xn.
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The geometric mean of two numbers is the square root of their product. For example, the geometric mean of 4 and 25 is 10.
un = u0*rn for n = 1,2,3, ... where r is the constant multiple.
what is the recursive formula for this geometric sequence?
Per the formula in the related link, substitution into the formula yields (3*12)1/2, which is (36)1/2 or 6.
No, the geometric mean is not the same as the mean of two numbers.