Posted by Denis Borris on September 23, 2002 at 02:47:06:
In Reply to: geometric sequence posted by Lisa on September 23, 2002 at 00:52:36:
: {4^n}infintiy
: n=1
: show the sequence is geometric a find the common ratio
: is this the way to present it
: if a_1=1
: and a_2= 4
: then r = 4