Hello! Thank you so much. Happy to know that you found the article useful!

Knowledge of deterministic calculus helped me in a few ways in my field. To name a few:

1. Analysis of interest rate sensitivity for fixed income products

2. Used partial derivatives to understand options greeks etc.

3. A good grounding in deterministic calculus helped build good clarity on concepts from stochastic calculus that get frequently used in quantitative finance. :)