Paper I · 9 Logical Reasoning & Analytical Ability · 9.2 Algebra: equations, identities and progressions

9.2.4 Logarithms: laws, change of base and simplification

A logarithm is just an exponent: log_a N = x means aˣ = N, so the laws of logs are the laws of indices written the other way round.

  • APPSC Paper I · Paper I
  • Standard level
  • 5 min read
  • Full course

Key terms

  • logarithm
  • common logarithm
  • laws of logarithms
  • change of base
  • characteristic
  • number of digits
  • log 2
  • log 3
  • log equations

What this note covers

  1. Core factsFoundation
  2. ExplainedStandard
  3. DeeperAdvanced
  4. Common trapsFoundation
  5. Quick revisionFoundation

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