Logs Nov 10 09
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Logs Nov 10 09

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Logs Nov 10 09 Logs Nov 10 09 Presentation Transcript

  • Use the change of base formula to find the decimal approximation of  each of the following to 4 decimal places ...
  • Now solve these using logarithms ...
  • Now solve these using logarithms ...
  • In General ... log ax a =x
  • Now lets solve some logarithmic equations ... log2x + log2(x ­ 1) = log22
  • log5(x ­ 3) + log5x = log510
  • log8(x ­ 2 ) + log8(x ­ 4 ) = 1
  • Exercise 25 Questions 1 ­ 14