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Returns the hyperbolic cosine of a complex number. The hyperbolic cosine of a complex number can be expressed by:
The result is presented in the string format and has the character "i" or "j" as an imaginary unit.
This function is part of the Open Document Format for Office Applications (OpenDocument) standard Version 1.2. (ISO/IEC 26300:2-2015)
This function is available since LibreOffice 3.6.
Complex_number is a complex number whose hyperbolic cosine is to be calculated.
A complex number is a string expression resulting in the form "a+bi" or "a+bj", where a and b are numbers. If the complex number is actually a real number (b=0), then it can be either a string expression or a number value.
The function always returns a string representing a complex number. If the result is a complex number with one of its parts (a or b) equal to zero, that part is not displayed.