ERF

Returns the error function integrated between lower_limit and upper_limit.

If this function is not available, and returns the #NAME? error, install and load the Analysis ToolPak add-in.

ShowHow?

  1. On the Tools menu, click Add-Ins.
  2. In the Add-Ins available list, select the Analysis ToolPak box, and then click OK.
  3. If necessary, follow the instructions in the setup program.

Syntax

ERF(lower_limit,upper_limit)

Lower_limit     is the lower bound for integrating ERF.

Upper_limit     is the upper bound for integrating ERF. If omitted, ERF integrates between zero and lower_limit.

Remarks

  • If lower_limit is nonnumeric, ERF returns the #VALUE! error value.
  • If lower_limit is negative, ERF returns the #NUM! error value.
  • If upper_limit is nonnumeric, ERF returns the #VALUE! error value.
  • If upper_limit is negative, ERF returns the #NUM! error value.

Equation

Equation

Example

The example may be easier to understand if you copy it to a blank worksheet.

ShowHow to copy an example

  1. Create a blank workbook or worksheet.
  2. Select the example in the Help topic.

 Note   Do not select the row or column headers.

Selecting an example from Help

Selecting an example from Help
  1. Press CTRL+C.
  2. In the worksheet, select cell A1, and press CTRL+V.
  3. To switch between viewing the results and viewing the formulas that return the results, press CTRL+` (grave accent), or on the Formulas tab, in the Formula Auditing group, click the Show Formulas button.
 
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A B
Formula Description (Result)
=ERF(0.74500) Error function integrated between 0 and 0.74500 (0.707929)
=ERF(1) Error function integrated between 0 and 1 (0.842701)
 
 
Applies to:
Excel 2003