GCSE Maths (AQA)

435 videos | 33 hours

Function Machines

Please subscribe to watch this video.

This, and all other videos, are included in our premium subscriptions.

Premium accounts get access to all videos.

Algebra Notation, Vocabulary and Manipulation

Function Machines

3:01 Identities and Functions
Spec A7
Previous Identities Next Adding & Subtracting Algebraic Fractions
  • A function is a series of operations performed on an input value
  • A function machine is a flow diagram used to show the operations of a function
  • A function machine takes an input and performs operations on it before returning an output
  • Example: input of 2, operation of 2 times 2, output of 4
  • Example: input of 15, operation of times 3, output of 45, operation of plus 7, final output of 52
  • Reverse engineering: given output of 30, inverse operation of minus 6, input of 36, inverse operation of times 2, input of 18
  • Checking answer: input of 18, times 2 operation, output of 36, minus 6 operation, final output of 30 confirms correct answer

Please subscribe to access these revision notes.

This, and all other video notes, are included in our premium subscriptions.

Premium accounts get access to all videos and revision notes.