anonymous
  • anonymous
What is the solution, or what are the solutions, of log9x2 = log925? no solution 5 only –5 only –5 and 5
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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DanJS
  • DanJS
there are a couple log rules that are always used, like 3 or 4 to be memorized
DanJS
  • DanJS
like the power one, you have log of x^2, power can pull down to front 2 log x
anonymous
  • anonymous
ok

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DanJS
  • DanJS
actually here, both sides are log base 9 of (something) you can remove the logs by 9^[log9(x^2)] = x^2
anonymous
  • anonymous
would it be the first?
DanJS
  • DanJS
\[\large b^{\log _{b}(x) } = x\] inverse of log function ,
DanJS
  • DanJS
x^2 = 25 then is left
anonymous
  • anonymous
5
DanJS
  • DanJS
the log functions can only have + values of X the inverse of the log, the exponential function, can have any + or - value for X
DanJS
  • DanJS
|dw:1443480711313:dw|
DanJS
  • DanJS
overall shape is like that for the logs, the domain is x values greater than zero

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