Jawabanmu

2014-02-09T00:46:15+07:00
A. rasio 
U2 / U1 = 4/1 = 4

b. U_n=a.r^{n-1}\\
U_n=1.4^{n-1}\\
U_n=4^{n-1}\\

c. U_n=4^{n-1}\\\\
U_{10}=4^{10-1}\\\\
U_{10}=4^{9}\\\\
U_{10}=262144\\\\