Finance, economics, ecology, virology, electrical engineering, mechanical engineering, chemical engineering, software engineering, pretty much any field with a technical component (i.e one that uses numbers).
You could reasonably just look at 2^n for software, though in general usually continuous math is simpler then discrete math IMO. Doubling vs. e^x is kind of an exception to the rule, and if you do any software involving signal processing or simulations, you'll want to understand the continuous version.
You could reasonably just look at 2^n for software, though in general usually continuous math is simpler then discrete math IMO. Doubling vs. e^x is kind of an exception to the rule, and if you do any software involving signal processing or simulations, you'll want to understand the continuous version.