If a function does not have an inverse, since it is not one-to-one, restricting the domain of a function could be a good way to guarantee an inverse function exists. For example, \(y = x^2\) does not ...

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 ...

Solving quadratic equations - Edexcel Graphs of quadratic functions. ... Example. Draw the graph of \(y = x^2 -x – 4 \) and use it to find the roots of the equation to 1 decimal place.

Sketch derived, inverse or other related functions using graph translations. Complete the square and find composite functions for Higher Maths.