The expression you've provided is:

$f(x) = \frac{1}{3}x^3 - x^2 - 3x + 5$

To understand the behavior of this function, we can perform several analyses. These may include finding its derivative (for critical points), its roots (if solvable), or its behavior as $x \to \infty$ or $x \to -\infty$. Here are some things we can explore:

1. Derivative: The first derivative can help us find the critical points of the function, which can tell us about local maxima, minima, or inflection points.
2. Roots: If you're interested in finding the zeros of this cubic polynomial, we can attempt to solve it.
3. Behavior: We can analyze the end behavior of the cubic function to understand how it behaves as $x$ increases or decreases.
4. Graph: If you wish, I can help plot the graph to visualize it.

Would you like to proceed with one of these steps or another specific question related to this expression?

Related questions:

1. How do you find the critical points of a cubic function?
2. What is the role of the first and second derivatives in understanding the function's graph?
3. How do you solve cubic equations algebraically?
4. What is the behavior of cubic functions as $x \to \infty$?
5. How does the term $\frac{1}{3}x^3$ influence the graph of this function?

Tip: A cubic function always has at least one real root, and it can have up to three real roots, which can be found through factoring or numerical methods.