acosh() function for complex number in C++

The acosh() function for complex number is defined in the complex header file. This function is the complex version of the acosh() function. This function is used to calculate the complex arc hyperbolic cosine of complex number z and returns the arc hyperbolic cosine of complex number z.

Syntax:

template<class T> complex<T> 
       acosh (const complex<T>& z );

Parameter: This method takes a mandatory parameter z which represents the complex number.



Return value: This function returns the arc hyperbolic cosine of complex number z.

Below programs illustrate the acosh() function in C++:

Example 1:-

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// c++ program to demonstrate
// example of acosh() function.
  
#include <bits/stdc++.h>
using namespace std;
  
// driver program
int main()
{
    complex<double> complexnumber(-2.0, 0.0);
  
    // use of acosh() function for complex number
    cout << "The acosh of "
         << complexnumber
         << " is "
         << acosh(complexnumber)
         << endl;
  
    return 0;
}

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Output:

The acosh of (-2,0) is (1.31696,3.14159)

Example 2:-

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// c++ program to demonstrate
// example of acosh() function.
  
#include <bits/stdc++.h>
using namespace std;
  
// driver program
int main()
{
    complex<double> complexnumber(0.5, 0.0);
  
    // use of acosh() function for complex number
    cout << "The acosh of "
         << complexnumber
         << " is "
         << acosh(complexnumber)
         << endl;
  
    return 0;
}

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Output:

The acosh of (0.5,0) is (0,1.0472)


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