Math, asked by ssr4747, 3 months ago

find the sum of series 1+a+a^2+ - - - upto n terms

Answers

Answered by alokkrishna

1

Step-by-step explanation:

x=1 r= a

Sn=x(r^n-1)/(r-1)

=1(a^n-1)/a-1

=a^n-1/a-1

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