Question

$1 + \frac{a - b}{a} + \frac{1}{2!}\left( \frac{a - b}{a} \right)^{2} + \frac{1}{3!}\left( \frac{a - b}{a} \right)^{3} + ......\infty =$

• A. $x =$
• B. $e^{a}$
• C. $\frac{e}{e^{b/a}}$
• D. $\frac{e}{e^{a/b}}$

Answer 1

Answer: (C)

$\frac{e}{e^{b/a}}$

Answer 2

$e^{2}$

$\frac{1}{2}(e + e^{- 1})^{2}$

$\frac{3e - 1}{6}$ .