## exponential function

### y=Ce^kx

An exponential function is a type of mathematical function that describes a relationship between a base number and a variable exponent. It has the form f(x) = a^x, where ‘a’ is a constant, and ‘x’ is the input variable. The value of ‘a’ determines the growth or decay rate of the function. Exponential functions are widely used in various fields, including physics, economics, and biology, to model growth and decay phenomena.

The most common exponential function is the natural exponential function, which has the base ‘e’, a mathematical constant approximately equal to 2.71828. The natural exponential function has the form f(x) = e^x. It has many useful properties, such as the fact that its derivative is equal to the function itself, i.e., d/dx(e^x) = e^x. The natural exponential function is often used to model continuous growth or decay over time.

Exponential functions can be solved algebraically using rules of exponents and logarithms. For example, when two exponential functions with the same base are multiplied, their exponents can be added to produce a new exponential function with the same base. This property is known as the product rule of exponents. Similarly, when two exponential functions with the same exponent are divided, their bases can be multiplied to produce a new exponential function with the same exponent. This property is known as the quotient rule of exponents.

Overall, the exponential function is a fundamental concept in mathematics, with a wide range of applications in modeling growth, decay, and many other physical and social phenomena.

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