B.
To find the inverse of a function, we
need to switch the roles of and y
and then solve for y. Given function:
f(æ) = -21. Let's switch T and y to
get: z = -22. Solve for y to get the
inverse function: f() =-2 So,
the inverse of the function
f(æ) = -2 is f-'(z) = -2. Therefore,
the correct answer is: B.
f-(z) = -2
