WJEC A-Level Further Mathematics Revision
Explore WJEC A-Level Further Mathematics revision topics. Check the official specification for complete requirements for your exam year and route.
Course details
Assessment The assessment includes Unit 1; see the official specification for the full structure.
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Reviewed course guidance
Revision points, with the explanation beside them
Open a point to read what to know, how to use it in an assessment, a plain-language explanation and a self-check. Answers stay hidden until you choose to reveal them.
Options and source
A2 optional unit
- Unit 5 Further Statistics B
- Unit 6 Further Mechanics B
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Topic group
Reviewed requirements
- Core
Scope: Core · §2.1 AS Unit 1 Further Pure Mathematics A, 2.1.1 Proof — induction in the listed context of sums of series
This explanation covers part of the source requirement only. Its tick is separate and does not count as a fully revised requirement.
Open revision guidance
What to know
- Induction proves a statement over successive integers by checking a base case and proving that truth at k implies truth at k+1. The induction hypothesis applies only to the chosen k, not automatically to every integer.
What to do in an assessment
- Write the base case, state the hypothesis, add the next term to the assumed sum, simplify to the claimed expression with k+1, and state the conclusion for all integers in the specified range.
In plain language
For 1+2+…+n=n(n+1)/2, the base case n=1 is true. Assume the sum to k is k(k+1)/2. Then the next sum is k(k+1)/2+(k+1)=(k+1)(k+2)/2. This is exactly the same formula with k+1 in place of k, so the step is complete. The proof works for the whole sequence, unlike checking only a few sums.
Self-check
What value does 1+2+…+10 have according to the formula?
Show the answer
10×11/2 = 55.
Earlier topic checklist
These earlier topic ticks are separate from the reviewed points above and do not count towards that progress.
Further Mathematics topic list
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These ticks keep your earlier topic checklist. They do not count towards the new reviewed requirements above. Its numbering may be internal; use the linked references above for the exact reviewed source requirements.
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This guide is also available in Welsh (Cymraeg): Welsh (Cymraeg) guide
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