Question

The sum of the series$\frac{1}{2.3} + \frac{1}{4.5} + \frac{1}{6.7} + ... =$

• A. $\log(2/e)$
• B. $\log(e/2)$
• C. 2/e
• D. e/2

Answer 1

Answer: (B)

$\log(e/2)$

Answer 2

$(e^{x} - 1)^{2}$

$x^{4}$

$1 + \frac{2^{3}}{2!} + \frac{3^{3}}{3!} + \frac{4^{3}}{4!} + ....\infty$.