Sn=a(r^n-1)/r-1 if n<1
En=a(1-r^n)/1-r if n>1.........
Written on Jan. 5, 2019, 9:14 p.m.
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Answer of this question
geometric progression
You mean Geometric progression (G.P):
Sn=a(r^n-1)/r-1 if n<1
En=a(1-r^n)/1-r if n>1.........
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