How to get the dependent entities (referencing entities) for an User Defined Function (UDF)
You can find out the referencing entity dependencies for your function or any other database entities by using DMV dm_sql_referencing_entities. An example statement is as below.

Select 
referencing_schema_name, referencing_entity_name, 
referencing_id, referencing_class_desc, is_caller_dependent
from sys.dm_sql_referencing_entities ('dbo.ufn_MyFunction', 'OBJECT');