Question

if the sum of first two terms of an infinite GP is 1 and every term is twice the sum of all the successive terms ,then its first term is

Hand written only​

Answer 1

Answer:

1/4

Step-by-step explanation:

GP = a + ar + ar² + ar³ + .....∞

a(1+r) = 1

a = 2ar ÷ 1-r

2r = 1-r  , r = 1/3 , a = 3/4

first term = 1/4