(i)
[ a-b=a(1-r),\quad b-c=ar(1-r),\quad c-d=ar^2(1-r) ] Clearly in G.P. with ratio (r).
If $a,\ b,\ c,\ d$ are in G.P., prove that:
[ a-b=a(1-r),\quad b-c=ar(1-r),\quad c-d=ar^2(1-r) ] Clearly in G.P. with ratio (r).
Discuss theoretical concepts, mathematical formulas, and architectural foundations.