Cevap:
[tex] \frac{ \frac{1}{a - b} + \frac{1}{a + b} }{ \frac{1}{a - b} - \frac{1}{a + b} } = \frac{\frac{a + b + a - b}{(a + b).(a - b)}}{ \frac{a + b - (a - b)}{(a + b).(a - b)} } \\ = \frac{2a}{(a + b).(a - b)}. \frac{(a + b).(a - b)}{a + b - a + b} \\ = \frac{2a}{2b} = \frac{a}{b} [/tex]
