PHP Function: cosh
In PHP, the cosh function is used to calculate the hyperbolic cosine of a given number. It is a mathematical function that is commonly used in various scientific and engineering calculations. The cosh function is part of the PHP math extension and is available in PHP version 4 and above.
Syntax
The syntax for the cosh function is:
cosh(float $number): float
The cosh function takes a single parameter, which is the number for which you want to calculate the hyperbolic cosine. It returns the hyperbolic cosine of the given number as a float value.
Example
Here's an example that demonstrates the usage of the cosh function:
The output of the above code will be:
The hyperbolic cosine of 2.5 is 6.1322894796637
Explanation
The cosh function calculates the hyperbolic cosine of the given number. The hyperbolic cosine is defined as:
cosh(x) = (e^x + e^(-x)) / 2
Where e is the base of the natural logarithm, approximately equal to 2.71828.
In the example above, we calculate the hyperbolic cosine of 2.5 using the cosh function. The result is approximately 6.1322894796637.
Usage
The cosh function is commonly used in various mathematical and scientific calculations. It is particularly useful in fields such as physics, engineering, and finance.
For example, the cosh function can be used to calculate the shape of a hanging cable under its own weight. It can also be used to model the growth of populations or the decay of radioactive substances.
Additionally, the cosh function can be used in financial calculations, such as calculating the present value of an investment or the future value of a loan.
Summary
The cosh function in PHP is used to calculate the hyperbolic cosine of a given number. It is a mathematical function that is commonly used in various scientific and engineering calculations. The cosh function takes a single parameter, which is the number for which you want to calculate the hyperbolic cosine, and returns the result as a float value.
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