Question

simplify [1 − {1 − (1 −a )^−1}^−1]^−1

Answer 1

Answer:

1

Step-by-step explanation:

Answer 2

Answer:

$(1 - (1 - \frac{1}{1 - a} )) \\ = (1 - ( \frac{1 - a - 1}{1 - a} )) \\ = (1 + \frac{a}{1 - a} ) \\ = \frac{1 - a + a}{1 - a} \\ = \frac{1}{1 - a}$