Curriculum
Course: General Mathematics — Second Secondary
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Curriculum

General Mathematics — Second Secondary

Text lesson

Properties of Logarithms

General Mathematics — Second Secondary

Properties of Logarithms

Lesson summary

Lesson summary

  • log(xy) = log x + log y, log(x / y) = log x − log y, and log(xn) = n log x.
  • Change of base loga b = logc b / logc a.
  • The laws are used to expand expressions, combine them, and solve equations.
  • Always check the solutions, because every argument of a logarithm must be positive.
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