mel5934 mel5934
  • 01-10-2019
  • Mathematics
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How can the indicated logarithm be found? Without a calculator❓

How can the indicated logarithm be found Without a calculator class=

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LammettHash
LammettHash LammettHash
  • 01-10-2019

I guess you're supposed to write the expression on the right in terms of [tex]A,B,C[/tex].

18. Notice that [tex]729=9^3[/tex], so

[tex]\log_8729=\log_89^3=3\log_89=3B[/tex]

20. Notice that [tex]\dfrac{14}3=\dfrac{42}9=\dfrac{6\times7}9[/tex], so

[tex]\log_8\dfrac{14}3=\log_8\dfrac{6\times7}9=\log_86+\log_87-\log_89=A+C-B[/tex]

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