What is function in MSEXCEL?

Answer 1

They are pre programmed commands (functions) that the user needs to make operational demands on the spreadsheet.

i.e.

DAY

Converts a serial number to a day of the month

DAYS360

Calculates the number of days between two dates based on a 360-day year

EDATE

Returns the serial number of the date that is the indicated number of months before or after the start date

AND

Returns TRUE if all of its arguments are TRUE

FALSE

Returns the logical value FALSE

IF

Specifies a logical test to perform

NOT

Reverses the logic of its argument

OR

Returns TRUE if any argument is TRUE

TRUE

Returns the logical value TRUE