# MathHypergeometric2F2 Calculates the value of the Hypergeometric_2F2 (a, b, c, d, z) function using the Taylor's method. ``` double  MathHypergeometric2F2(    const double  a,      // the first parameter of the function    const double  b,      // the second parameter of the function    const double  c,      // the third parameter of the function    const double  d,      // the fourth parameter of the function    const double  z       // the fifth parameter of the function    ) ``` Parameters a [in] The first parameter of the function. b [in] The second parameter of the function. c [in] The third parameter of the function. d [in] The fourth parameter of the function. z [in] The fifth parameter of the function. Return Value Value of the function.