+0  
 
+5
135
1
avatar+359 

Suppose the function f has all real numbers in its domain and range and is invertible. Some values of f are given by the following table:

What is the value of f(f(3)) + f(f^{-1}(4)) + f^{-1}(f^{-1}(5))? If there is not enough information to answer this question, enter "NEI".

MIRB16  Jul 22, 2017
Sort: 

1+0 Answers

 #1
avatar+6900 
0

We know that f(3) = 5.

so f(f(3)) = f(5) = 8.

f(f^(-1)(4)) is just 4.

f^(-1)(f^(-1)(5)):

f^(-1)(5) = 3

f^(-1)(3) = 2

so f^(-1)(f^(-1)(5)) = 2.

Add them up: 8 + 4 + 2 = 14. :D

MaxWong  Jul 23, 2017

3 Online Users

We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners.  See details