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Define and write an exponential function.

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Explanation:

An exponential function is a mathematical function of the form:

f(x) = a^x

where "a" is a constant known as the base of the exponential function, and "x" is the exponent. The value of the function at any point "x" is equal to the base "a" raised to the power of "x".

For example, the function f(x) = 2^x is an exponential function with base 2. It represents a function that grows exponentially as x increases.

Another example of an exponential function is f(x) = e^x, where "e" is the mathematical constant approximately equal to 2.71828. This function is commonly known as the natural exponential function and is frequently used in mathematics, science, and engineering to model exponential growth and decay.

Exponential functions are widely used in various fields, including finance, physics, and biology, to model phenomena that exhibit exponential growth or decay over time

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