Find the value of A

Given f (I) is such that lim, too if (I) - 0 and f (1) - 8. For a constant c, assume that g( ) - f (z) is positive decreasing, and (f(2))7 continuous, and consider the series This series converges for values C . A and diverges for C |, where A is a certain number. What is A? Round your answer to three decimal places as necessary. Your