Q: The power series for ln( (1 + x) / (1 − x) ) is
(a)x + x³/3 + x⁵/5 + …
(b)2 ( x − x³/3 + x⁵/5 − … )
(c)2 ( x + x³/3 + x⁵/5 + … )
(d)x − x³/3 + x⁵/5 − …
Correct Answer: (c)
The correct answer is (d) 'x − x³/3 + x⁵/5 − …'. This question from the Logical Reasoning & Mental Ability domain tests knowledge of Reasoning.