\( \definecolor{colordef}{RGB}{249,49,84} \definecolor{colorprop}{RGB}{18,102,241} \)
A geometric sequence is given by two of its terms: \(u_2=12\) and \(u_5=96\).Assuming the common ratio is positive, determine the explicit formula for \(u_n\) (starting from \(u_1\)).
\(u_n=\)