What is ERFC function in Excel? ERFC function is one of Engineering functions in Microsoft Excel that returns the complementary ERF function integrated between x and infinity. Syntax of ERFC function ERFC(x) The ERFC function syntax has the following arguments: X: The lower bound for integrating ERFC. ERFC formula explanation If x is nonnumeric, ERFC returns the #VALUE! error value. Example of ERFC…