Functions is an important concept in mathematics to grasp. These sites, blogs and videos do an excellent job of explaining it visually and offer all these videos and more resources for free. Hope this ...

Revise determining composite and inverse functions for Higher Maths. Higher Maths - Determining composite and inverse functions. revision-guideHigher Maths - Determining composite and inverse ...

A function is a way of describing what happens to an input variable, in order to get the output result. \(\text{Input} \rightarrow \text{FUNCTION} \rightarrow \text{Output}\) If we think of a simple ...