Thread: expressions

hi, i have a math problem

Term ......... . . Pattern
_________l__________________

...1 ............. 2
... 2 ............. 6
...3 ............. 18
...4 ............. 54
...5 ............. 162



so the pattern is start at 2 times 3 each time. but i need a expression

ex. n+5

N is the term, N and something else has to give me the pattern

please help me

Originally Posted by ashimashi

hi, i have a math problem

Term ......... . . Pattern
_________l__________________

...1 ............. 2
... 2 ............. 6
...3 ............. 18
...4 ............. 54
...5 ............. 162



so the pattern is start at 2 times 3 each time. but i need a expression

ex. n+5

N is the term, N and something else has to give me the pattern

please help me

This is a geometric sequence, with .

In a geometric sequence .


So



...


Can you see that ?

kk thank you