STEP 2006: 25 of 28 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

  200820172019

  Worked solutionOpen the method
• 4Reflect the Interval & AddKey methodPureIntegration6 other sittings

  Same method, other sittings

  201020152016201820202022

  Worked solutionOpen the method
• 5Piecewise Case-SplittingKey methodPureFunctions & Curve Sketching3 other sittings

  Same method, other sittings

  201420222025

  Worked solutionOpen the method
• 6Inequality Gap → Sum of SquaresKey methodPureAlgebra & Inequalities1 other sitting

  Same method, other sittings

  2022

  Worked solutionOpen the method
• 7Parametrising ConicsKey methodPureCoordinate Geometry & Conics5 other sittings

  Same method, other sittings

  20082014201720182022

  Worked solutionOpen the method
• 8Affine Combinations & the Section FormulaMatching Coefficients to Intersect LinesKey methodPureVectors & Matrices7 other sittings

  Same method, other sittings

  2008200920122014201520172024

  Worked solutionOpen the method

  AlsoMatching Coefficients to Intersect Lines
• 9Limiting EquilibriumTunnelMechanics10 other sittings

  Same method, other sittings

  2012201320142017201820192020202220232024

  Worked solutionOpen the method
• 101D Collisions → Two ScalarsTunnelMechanics8 other sittings

  Same method, other sittings

  20082009201120132018201920222025

  Worked solutionOpen the method
• 11Projectiles → Split by AxisTunnelMechanics11 other sittings

  Same method, other sittings

  20082009201020122013201420172020202220232024

  Worked solutionOpen the method
• 12Binomial → Poisson or NormalKey methodProb & StatsProbability & Statistics2 other sittings

  Same method, other sittings

  20162023

  Worked solutionOpen the method
• 14Variance via CovariancesKey methodProb & StatsProbability & Statistics3 other sittings

  Same method, other sittings

  201320162017

  Worked solutionOpen the method

• 1
• 2
• 3
• 4
• 5
• 6
• 7
• 8
• 9
• 10
• 11
• 12
• 13
• 14

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

• 1Sweeping Lines for Root CountsKey methodPureFunctions & Curve Sketching4 other sittings

  Same method, other sittings

  2011201320142021

  Worked solutionOpen the method
• 2Reflect the Interval & AddKey methodPureIntegration6 other sittings

  Same method, other sittings

  201020152016201820202022

  Worked solutionOpen the method
• 3Maclaurin Coefficients by DifferentiationKey methodPureSequences & Seriesonly this sitting

  Same method, other sittings

  This one has only struck here so far.

  Worked solutionOpen the method
• 4Maclaurin Coefficients by DifferentiationKey methodPureSequences & Seriesonly this sitting

  Same method, other sittings

  This one has only struck here so far.

  Worked solutionOpen the method
• 5Rotation as MultiplicationKey methodPureComplex Numbers4 other sittings

  Same method, other sittings

  2008201420172020

  Worked solutionOpen the method
• 6Polar Gradient & Cutting AngleKey methodPureCoordinate Geometry & Conics2 other sittings

  Same method, other sittings

  20172021

  Worked solutionOpen the method
• 7Solving for $p$Key methodPureDifferential Equations1 other sitting

  Same method, other sittings

  2008

  Worked solutionOpen the method
• 8Induction with an InvariantKey methodPureProof & Number Theory2 other sittings

  Same method, other sittings

  20152018

  Worked solutionOpen the method
• 9Stability via Potential EnergyKey methodMechanics4 other sittings

  Same method, other sittings

  2013201820202022

  Worked solutionOpen the method
• 10Moment of Inertia → RotationTunnelMechanics5 other sittings

  Same method, other sittings

  20082012201320152018

  Worked solutionOpen the method
• 111D Collisions → Two ScalarsTunnelMechanics8 other sittings

  Same method, other sittings

  20082009201120132018201920222025

  Worked solutionOpen the method
• 12Binomial → Poisson or NormalKey methodProb & StatsProbability & Statistics2 other sittings

  Same method, other sittings

  20162023

  Worked solutionOpen the method
• 13Geometric ProbabilityKey methodProb & StatsProbability & Statistics3 other sittings

  Same method, other sittings

  201220222024

  Worked solutionOpen the method
• 14Variance via CovariancesKey methodProb & StatsProbability & Statistics3 other sittings

  Same method, other sittings

  201320162017

  Worked solutionOpen the method