Lesson 3 –A : what is function ?

Lesson 3 –A : what is function ?
As we said before Functions is Excel's preset formulas, and we should start it with equal sign.
To got to functions window go to ‘formulas’ tab then chose ’ insert function ‘ button 


We can say that Functions is the backbone of excel , without Functions Excel would be an ordinary table

 

As we can see after we choose ‘insert function ‘we will get this window , we notice that it contains :
Search box : to search for function you need.
Drop down list : to categorize functions by functionality.
List of function with name .
Illustration to the syntax (components) of function   .

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