How to Graph a Function in Excel. A mathematical function is a formula that takes an input, x, applies a set of calculations to it, and produces an output called y. By calculating a function at a ...

Revise how to recognise and determine the equation of a quadratic function from its graph. BBC Bitesize Scotland revision for SQA National 5 Maths.

Of course, not every calculation has a pre-built function in Excel. For instance, Excel functions can convert text to upper and lower case , but there's no Excel function for converting text to ...