Correct Answer: Option A

Explanation

\(f(x) = \frac{1}{2 - x}, x \neq 2\)

\(f(y) = \frac{1}{2 - y}\)

\(x = \frac{1}{2 - y}\) (Let x = f(y))

\(2x - xy = 1 \implies y = \frac{2x - 1}{x}\)

\(\therefore f^{-1}(x) = \frac{2x - 1}{x}\)

\(f^{-1}(-\frac{1}{2}) = \frac{2(-\frac{1}{2}) - 1}{-\frac{1}{2}}\)

= \(-2 \times -2 = 4\)

• a truck of mass 20kg moving at a speed of 8m/s, collides with another truck of mass 30kg moving in... Answer this

  0 Answers   ·   2 hours ago
• Passing a thread in and out of a fabric in order to make specific design? Answer this

  1 Answers   ·   13 hours ago
• the leader and the lesson by niyi osun dare is about leadership in Africa.discuss? Answer this

  1 Answers   ·   Literature in English   ·   14 hours ago