For this problem, we are given a certain function and we need to evaluate it in various points.
The function is given below:

The first value we need to calculate is f(4), we need to replace x with 4 and evaluate the expression.

The second value we need to calculate is f(3), we need to replace x with 3 and evaluate the expression.

The third value we need to calculate is f(2), we need to replace x with 2 and evaluate the expression.

The value for this is not real.