Question

If an infinite geometric series the first term is a and common difference is r. If the sum of the series is 4and the second term is 3/4 then (a, r) is

Answer 1

Answer:

Step-by-step explanation:

sum for infinite G.P is a/1-r

and tn = a*r^n-1

for 2nd term

3/4 = a*r

and a/1-r = 4

on solving we get a = 3 and r = 1/4

or a = 1 and r = 3/4

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