[tex]\boxed{\sf{{ \bf{rumus \: barisan \: geometri \: : }}}}[/tex]
[tex]\boxed{\sf{{ \bf{u_n \: = \ {ar}^{n \: - \: 1} }}}}[/tex]
_________________________________________
Suku Pertama a = 2
b ( beda ) = 6
_________________________________________
[tex]{\sf{r \: = \: \frac{u2}{u1} }}[/tex]
[tex]{\sf{r \: = \: \frac{6}{2} }}[/tex]
[tex]{\sf{r \: = \:{\bf3} }}[/tex]
_________________________________________
[tex]\boxed{\sf{{ \bf{suku \: ke \: 7 \: : }}}}[/tex]
[tex]{\sf{u_7 \: = \: {ar }^{7 \: - \: 1} }}[/tex]
[tex]{\sf{u_7 \: = \: 2 \: \times \: {3}^{6} }}[/tex]
[tex]{\sf{u_7 \: = \: 2 \: \times \: 729}}[/tex]
[tex]{\sf{u_7 \: = \: \boxed{\sf{{ \bf{1.458}}}}}}[/tex]
_________________________________________
Suku Pertama = 2
b ( beda )= 6
_________________________________________
[tex]{\sf{r \: = \: \frac{{\sf{u6}}}{u2} }}[/tex]
[tex]{\sf{r \: = \: \frac{6}{2} }}[/tex]
[tex]{\sf{r \: = \:{{ \bf{3}}}}}[/tex]
_________________________________________
[tex]\boxed{\sf{{ \bf{suku \: ke \: 10 \: : }}}}[/tex]
[tex]{\sf{u_ 1{_{0}} \: = \: {ar}^{10 \: - \: 1} }}[/tex]
[tex]{\sf{u_ 1{_{0}} \: = \:2 \: \times \: {3}^{9} }}[/tex]
[tex]{\sf{u_ 1{_{0}} \: = \: 2 \: \times \: 19.683}}[/tex]
[tex]{\sf{u_ 1{_{0}} \: = \: \boxed{\sf{{ \bf{39.366}}}}}}[/tex]
