Based on the outputs of the function for the given inputs, it seems that the function is selective for certain concepts. Let's analyze the outputs:

- The word "apple" has an output value of 0.0373, which indicates a moderate association with a particular concept.
- The words "car", "love", "dog", and "book" all have very low output values (0.0003 or 0.0045), indicating a weak association with any specific concept.

From these results, it appears that the function implemented by f(x) is selective for the concept of "apple" and has a weaker association with the concepts of "car", "love", "dog", and "book".

[DESCRIPTION]: The function implemented by f(x) is selective for the concept of "apple", indicating a moderate association. It has a weaker association with the concepts of "car", "love", "dog", and "book".