Question

which one is user defined among formula and functions of ms excel?​

Answer 1

You write your own. When you create your own custom function for Excel, it's called a UDF, a User Defined Function. One example of a function that is not included in Excel is a function that returns the fiscal year. There are many ways to calculate the fiscal year from a date with existing functions in Excel.

Answer 2

Explanation:

So, what do we call an Excel formula and Excel function? Formula is an expression that calculates values in a cell or in a range of cells. For example, =A2+A2+A3+A4 is a formula that adds up the values in cells A2 through A4. Function is a predefined formula already available in Excel