Question

F−1(−2) =

f(−4) =

f(f−1(−2))

Answer 1

f−1(−2) = -4

f(−4) = -2

f(f−1(−2)) = -2

Explanation:

Given f(x) = 1/2x and f^-1(x) = 2x

f^-1(-2) = 2(-2) = -4

f(-4) = 1/2(-4) = -2

f(f^-1(-2)) = f(2(-2)) = f(-4) = 1/2(-4) = -2

Answer 2

f−1(−2) =

⇒ -4

f(−4) =

⇒ -2

f(f−1(−2)) =

⇒ -2