Worked Examples
Learn TMUA problem-solving techniques through carefully selected worked examples organised by Concept Bridge topic.
Availability follows each Topic, Worked Example, and Practice access level. Full solutions require membership unless marked public.
Reading and Iterating Functions from Graphs
1 Worked Examples
Geometric Series and Scaling
1 Worked Examples
Recovering a Missing Geometric Block
Choosing a Useful Form of the Expansion
1 Worked Examples
Rewriting Before Expanding
Following Function Relationships
Follow the information contained in an indirect function relationship without unnecessarily finding the whole function.
1 Worked Examples
Beyond the Discriminant
1 Worked Examples
How Turning Points Control the Number of Solutions
Modulus and Symmetry in Graphs
1 Worked Examples
When Does the Reflected Graph Exist?
Optimising Geometric Distances
1 Worked Examples
Reducing a Circle-to-Curve Distance
Relating Coefficients and Term Positions
1 Worked Examples
Using Term Position and Coefficient Ratios
Manipulating Sums and Indices
1 Worked Examples
Cancellation After Rewriting the Summand
Divisibility in Binomial Expansions
1 Worked Examples
Counting Coefficients Divisible by 72
Building New Graphs from a Known Graph
1 Worked Examples
Building a Graph Through Two Successive Operations
Optimising with a Substitution
1 Worked Examples
Finding the Range After a Substitution
Functional Equations
Use relationships between function values to create new equations and extract the information you need.
1 Worked Examples
Choosing Useful Substitutions in a Functional Equation
Finding a Required Term or Coefficient
1 Worked Examples
Finding a Coefficient Without Full Expansion
Using Substitution to Find Coefficient Sums
1 Worked Examples
Finding an Even-Power Coefficient Sum Without Expanding
Index Shifts and Subsequence Structure
1 Worked Examples
Matching Terms at Different Positions
Composing Graph Transformations
1 Worked Examples
Composing Transformations of an Already Transformed Function
Partial Sums and Blocks
1 Worked Examples
Comparing Equal-Length Blocks
Optimising with Restricted Inputs
1 Worked Examples
Combining a Hidden Restriction with Stationary Points
Building an Expression to Optimise
1 Worked Examples
Building an Area Expression from Symmetry
Beyond Polynomial Functions
1 Worked Examples
Finding the Critical Level of a Modulus Graph
Following Repeated Relationships
Follow a relationship through several steps to reveal cycles, fixed behaviour and repeating structure.
1 Worked Examples
Closing a Cycle of Inputs and Function Values
Working Backwards Through a Function
Decide when information about an output can be traced backwards to determine the input.
1 Worked Examples
Recovering an Input from Indirect Information
When a Function Loses Information
Recognise when several inputs can produce the same output and determine what information remains when a relationship is reversed.
1 Worked Examples
When Equal Outputs Do Not Give Equal Inputs
Recurrence Relations
Use relationships between successive terms to uncover patterns, cycles and structures without calculating every term.
1 Worked Examples
Using Consecutive Terms to Determine the Rule
From Critical Points to Edge Cases
1 Worked Examples
Finding Boundaries Before Solving
Functions Defined by Rules
Recognise the different ways unfamiliar functions and mathematical rules can be defined in TMUA problems.
3 Worked Examples
Reading a Defined Output as an Input Interval
Understanding Indexed Functions
Recognising Structure in a Defined Rule
Counting Solutions in Repeating Patterns
Use periodicity and interval restrictions to count repeated solutions efficiently.
1 Worked Examples
Using One Period to Count Solutions
When the Domain Changes the Answer
Understand how intervals and domain restrictions can change the number of valid solutions.
1 Worked Examples
Counting Solutions on a Restricted Domain
Counting Solutions of Composite Functions
1 Worked Examples