1.

Let f(x) denote the sum of the infinite trigonometric series f(x)=underset(n=1)overset(infty)Sigma sin (2x)/(3^(n)) sin (x)/(3^(n)) then the sum of the solution of the equation f(x)=0 lyingin the interval (0,629) is

Answer»

10100 `PI`
5050 `pi`
4950 `pi`
NONE of these

ANSWER :A


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