This introduction covers Functions as Machines within Inverse Functions for GCSE Mathematics. Revise Inverse Functions in Algebra for GCSE Mathematics with 8 exam-style questions and 4 flashcards. This topic appears regularly enough that it should still be part of a steady revision cycle. It is section 1 of 6 in this topic. Use this introduction to connect the idea to the wider topic before moving on to questions and flashcards.
Topic position
Section 1 of 6
Practice
8 questions
Recall
4 flashcards
Functions as Machines
Think of a function as a machine: you put a number in, it does something, and a different number comes out. An INVERSE function is a machine that UNDOES what the first machine did - it takes the output and gives you back the original input! It's like having an "undo" button for mathematics.
