How to make a cross reference to a formula? [closed]

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Right click on the formula object, choose Caption. In the Category field type Formula, type some Caption.

Now go to the location where you want to add the cross reference. Choose Insert, Cross Reference, in the "Cross-references" tab choose Formula on the left hand list. Choose on the bottom box named "Insert reference to" the option Numbering or Category and Numbering.

Hope this helps ;)