Exponential function: A mathematical function where a constant base is raised to a variable exponent. For example, f(x) = 2^x is an exponential function.
Logarithmic function: A mathematical function that represents the inverse relationship between exponentiation and logarithms. It allows us to solve for exponents when given a base and result.
Base e (Euler's number): A special irrational number approximately equal to 2.71828... It is commonly used in calculus and plays a significant role in exponential growth and decay functions.