In mathematics, "exp" is an abbreviation for the exponential function, which is a mathematical function denoted by $e^x$ or $\exp(x)$ . The exponential function is a positive-valued function of a real variable, although it can be extended to the complex numbers or generalized to other types of functions. The constant "e" in the exponential function is a universal constant, approximately equal to 2.718281828. The exponential function is used in many fields of mathematics, including calculus, probability, and statistics. It is also used in physics, chemistry, and engineering to model various phenomena.
The exponential function can be written in different ways, such as $e^x$, $\exp(x)$, or $\operatorname{exp}(x)$ . The notation $\exp(x)$ means $e^x$ . The inverse of the exponential function is the natural logarithm, often written as $\log(x)$, $\ln(x)$, or $\log_e(x)$ . The exponential function is used in many programming languages, and the name "exp" is often used to refer to the $e^x$ function.
