Correct Answer Roughly 62% Explanatory Answer a = b (1 + x) => a/b = 1 + x a = x (a + b) , dividing by a through out 1 = x (1 + b/a) 1 = x (1 + 1/(1 + x)) 1 = x (x + 2) / (x + 1) x + 1 = x2 + 2x => x2 + x - 1 = 0 Now, we need to solve this equation. Using the discriminant method, when we solve this, x turns out to be {-1 + sqrt (5)}/2 x has to lie between 0 and 1 and therefor cannot be { -1 - sqrt (5) }/2. So, the only solution is { -1 + sqrt (5) }/2. This is roughly 0.62.
Posted on: Thu, 04 Jul 2013 10:45:54 +0000
Trending Topics
Recently Viewed Topics
© 2015