Problem
Find the maximum number of real roots of the function \(f(x) = x^5 - 6x^4 + 9x^3 - 4x^2 + x - 2\).
Solution
Step 1 ：The maximum number of real roots of a polynomial function is equal to its degree.
Step 2 ：The given function \(f(x) = x^5 - 6x^4 + 9x^3 - 4x^2 + x - 2\) is a polynomial function of degree 5.
