香港巴士論壇

Can anyone help me solve this question ? Thanks

The positive numbers 3, k, 1, .... are in geometric sequence where all terms are positive.
(a) Find the value of k and leave your answer in surd form.
(b) Find the general term T(n).
(c) Express the product
T(1) x T(3) x T(5) x ... x T(2n-1)
in terms of n.

a k/3=1/k
k=開方3
b T(n)=3*(1/開方3)^(n-1)