The ERF function returns the error function integrated lower_limit and upper_limit.

ERF takes 1 required argument and 1 optional argument:

Syntax: ERF(lower_limit, [upper_limit])

#1)
Using the ERF function:
#2)
The arguments for the ERF function are:
Argument Required? Description
lower_limit Required The lower bound for integrating ERF.
upper_limit Optional The upper bound for integrating ERF. If omitted, ERF integrates between zero and lower_limit.
#3)
A couple things:
If lower_limit is nonnumeric, ERF returns the #VALUE! error value.
If upper_limit is nonnumeric, ERF returns the #VALUE! error value.

Summary

The ERF function returns the error function integrated between lower_limit and upper_limit.
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