What does functioning?

Answer 1

It means to be able to work. Function is the process where a machine can work and make things efficient. hears an ex. that is used in a sentence. the machine won't work wright. Or what you could say is the function is the ability to work so the mathematical definition would be the ability to solve an equation/prolem.
function means working.
A function is a special relation in which every input has a unique output.

Answer 2

The COUNTIF function counts the number of cells in a range, that meet a given criteria.

COUNTIF(range,criteria)

range = range of cells that you want to count based on the criteria

criteria = determine which cells to count.

So if you only want to count some numbers in a list, but not all, COUNTIF rather than COUNT would be used. Say you had a list of exam results in the cells B2 to B30. If 40 was the pass mark and you wanted to count how many passes there were, your formula would be like this:

=COUNTIF(B2:B30,">=40")

Answer 3

no ceomment