STEP 2008: 24 of 26 questions decoded, by method & chapter.

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The paper at a glance, coloured by move. Click a square to open its question; empty squares are not decoded yet.

• 1Constant & Periodic SequencesKey methodPureSequences & Series3 other sittings

  Same method, other sittings

  200620172019

  Worked solutionOpen the method
• 2Disguised Binomial & Geometric SeriesKey methodPureCombinatorics & Binomial1 other sitting

  Same method, other sittings

  2012

  Worked solutionOpen the method
• 3Reuse the Earlier ResultPavlovPureProof & Number Theory5 other sittings

  Same method, other sittings

  20092013201620192020

  Worked solutionOpen the method
• 5Weierstrass & Structured SubstitutionsTunnelPureIntegration4 other sittings

  Same method, other sittings

  2009201420192020

  Worked solutionOpen the method
• 6General Solutions of Trig EquationsPavlovPureTrigonometry3 other sittings

  Same method, other sittings

  201120172023

  Worked solutionOpen the method
• 7Bernoulli & Riccati SubstitutionsKey methodPureDifferential Equations1 other sitting

  Same method, other sittings

  2018

  Worked solutionOpen the method
• 8Affine Combinations & the Section FormulaPerpendicularity → Dot Product ZeroKey methodPureVectors & Matrices10 other sittings

  Same method, other sittings

  2006200920112012201420152017201920202024

  Worked solutionOpen the method

  AlsoPerpendicularity → Dot Product Zero
• 9Projectiles → Split by AxisTunnelMechanics11 other sittings

  Same method, other sittings

  20062009201020122013201420172020202220232024

  Worked solutionOpen the method
• 101D Collisions → Two ScalarsOblique ImpactTunnelMechanics10 other sittings

  Same method, other sittings

  2006200920112013201820192021202220242025

  Worked solutionOpen the method

  AlsoOblique Impact
• 11Kinematic ConstraintsKey methodMechanics3 other sittings

  Same method, other sittings

  201420152023

  Worked solutionOpen the method
• 12Indicators + Linearity of ExpectationKey methodProb & StatsProbability & Statistics4 other sittings

  Same method, other sittings

  2011201320212024

  Worked solutionOpen the method
• 13Compare Strategies by FactoringKey methodProb & StatsProbability & Statistics2 other sittings

  Same method, other sittings

  20102017

  Worked solutionOpen the method

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The paper at a glance, coloured by move. Click a square to open its question; empty squares are not decoded yet.

• 1Symmetric Functions & Power SumsKey methodPureAlgebra & Inequalities2 other sittings

  Same method, other sittings

  20102017

  Worked solutionOpen the method
• 2Sum → Telescoping DifferenceRecurrence → InductionKey methodPureCombinatorics & Binomial1 other sitting

  Same method, other sittings

  2017

  Worked solutionOpen the method

  AlsoRecurrence → Induction
• 3Parametrising ConicsKey methodPureCoordinate Geometry & Conics5 other sittings

  Same method, other sittings

  20062014201720182022

  Worked solutionOpen the method
• 4Bounding Integrals by ComparisonKey methodPureIntegration1 other sitting

  Same method, other sittings

  2016

  Worked solutionOpen the method
• 5Second-Order InvariantKey methodPureSequences & Series2 other sittings

  Same method, other sittings

  20182020

  Worked solutionOpen the method
• 6Solving for $p$Key methodPureDifferential Equations1 other sitting

  Same method, other sittings

  2006

  Worked solutionOpen the method
• 7Rotation as MultiplicationKey methodPureComplex Numbers4 other sittings

  Same method, other sittings

  2006201420172020

  Worked solutionOpen the method
• 8Characteristic Equation for RecurrencesTunnelPureSequences & Series3 other sittings

  Same method, other sittings

  201020112012

  Worked solutionOpen the method
• 9Variable AccelerationKey methodMechanics4 other sittings

  Same method, other sittings

  2009201220162017

  Worked solutionOpen the method
• 11Moment of Inertia → RotationTunnelMechanics5 other sittings

  Same method, other sittings

  20062012201320152018

  Worked solutionOpen the method
• 12Probability Generating FunctionsKey methodProb & StatsProbability & Statistics4 other sittings

  Same method, other sittings

  2009201120182025

  Worked solutionOpen the method
• 13Indicators + Linearity of ExpectationKey methodProb & StatsProbability & Statistics4 other sittings

  Same method, other sittings

  2011201320212024

  Worked solutionOpen the method