Question 966099
t1, t2, t3, 4, t5, 6, ...
Excuse the lack of subscripting.


You want common ration r to be {{{r<0}}}.
{{{4*r^2=6}}}
{{{2r^2=3}}}
{{{r^2=3/2}}}
{{{r^2=6/4}}}
{{{highlight(r=0+- sqrt(6)/2)}}}
-
You wanted the negative result:  {{{highlight(highlight(r=-sqrt(6)/2))}}}





The addition of 0 is only to help in rendering.