Question

If f(x) = 2x+1/x-4 what is the value of f^-1(3)

Answer 1

f^-1(3) = 1.719 or f^-1(3) = 0.149

Explanation:

for inverse function x and y coordinates are flipping so graph the function and find for what x - coordinate y- coordinate = 3

in case that f(x) =
`2x + (1)/(x-4)` than f^-1(3) = 1.719

in case that f(x) =
`2x + (1)/(x) -4` than f^-1(3) = 0.149

Answer 2

Answer: B

B (19/11) when divided = 1.72 repeat

of all the options given, this is the closest to the above answer.