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# What is the difference between a formula and a function?

**Formulas and functions are both important tools when creating an Excel spreadsheet; while users type formulas right into the bar at the top of the spreadsheet, formulas come built within the application itself, so it actually comprises a special sort of formula.** While it is not possible to nest a formula in Excel, it is possible to do so with functions.

In Excel, formulas allow the user to carry out mathematical calculations ranging from simple addition or subtraction and ranging to far more complex operations. Entering a formula always begins with clicking on the cell where the result of the formula is to appear and then entering the equal sign (=) to indicate to the program that a formula is about to appear.

It is possible to enter numbers directly into the formula, but it is better to enter cell locations, so that if changes are necessary to those values, the formula still works. Using constant numbers means that it is necessary to revise the formula with each change.

Functions add flexibility to spreadsheets by bringing decision-making and other elements into the process. Functions test certain conditions within the spreadsheet to see if they are true. Depending on the answer, other calculations take place. For example, a function could test sales price levels for certain merchandise items. If shipping is based on the price of items, the subsequent calculation could apply shipping fees to a bill after the customer has placed the order.

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## What are recursive formulas?

A: Recursive formulas have two parts: the first element and a formula relating the value of one element to the next. For example, in the sequence "1, 3, 5, 7,... Full Answer >Filed Under: -
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## How do you use an algebra formula sheet to help with math problems?

A: An algebra formula sheet is used to remind you of common algebraic formulas, such as the point-slope form of a line, while you are working through math pro... Full Answer >Filed Under: -
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## Where can you find a list of all Excel formulas?

A: Find a list of all the formulas and functions for the spreadsheet program Microsoft Excel on sites such as TechOnTheNet.com, PCWorld.com, Office.com and Du... Full Answer >Filed Under: -
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## How do you graph piecewise functions?

A: A piecewise function is simply two or more functions put together with non-intersecting domains. Once each domain has been determined and the endpoints hav... Full Answer >Filed Under: