When it comes to graphing complex functions, there’s a lot of techniques that can be applied to sketching the graph quickly. This post will act as a quick reminder of what functions are and preliminary graphing techniques. This is part of the Prelim Maths Extension 1 Syllabus from the topic Functions: Further, Work with Functions.
What is a function and how do we determine if a graph is a function?
We use the vertical line test: if every x value has only 1 unique y value it is a function.
How to test if a graph is a function?