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Returns the integral of the error function between the upper and lower bounds.
Grammar
ERF(lower_limit,[upper_limit])
ERF function syntax has the following parameters:
Lower_limit Required. The lower integral limit of the ERF function.
Upper_limit Optional. The upper limit of integration of the ERF function. If omitted, ERF points will be between zero and lower_limit.
Description
If lower_limit is non-numeric, ERF returns #VALUE!.
If upper_limit is non-numeric, ERF returns #VALUE!.
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