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<> and != (Not Equal)
Evaluates if two values aren’t equivalent.
MyDateTime__c != null. Use ISBLANK instead.Use
expression1 <> expression2 or expression1 !=
expression2, and replace each expression with
merge fields, expressions, or other numeric values.
IF(Maint_Amount__c + Services_Amount__c<> Amount,
"DISCOUNTED", "FULL PRICE")
This formula displays DISCOUNTED on a product if its maintenance amount and services amount don’t equal the product amount. Otherwise, displays FULL PRICE. Note that this example uses two custom currency fields for Maint Amount and Services Amount.

