Asked by ajay

find the sum of series 1+1/3+1/9+1/27+... to n terms sir this question answer 3/2(1-1/3n) sir please help me

Answers

Answered by bobpursley
r=1/3

Sum= A<sub>1</sub> (1-r<sup>n</sup> /(1-r)

sum= 1(1-(1/3)<sup>n</sup>)/(1-1/3)
sum=(1-(1/3)<sup>n</sup>)/(2/3)= (3/2)(1-(1/3)<sup>n</sup>)
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