anonymous
  • anonymous
Which answer represents the domain of the logarithmic function given below? F(x) = log9 x A. x 0 B. x < 0 C. x > 0 D. All real numbers
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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jchick
  • jchick
you cannot take the log of a number that is not positive
jchick
  • jchick
so find the one that says "positive numbers"
anonymous
  • anonymous
okay thank you

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jchick
  • jchick
log9(x)=y⟺9y=x and since 9y is always positive, that means x must always be positive
anonymous
  • anonymous
so it would be d? all real numbers/
anonymous
  • anonymous
just think about it what are these numbers are they greater or less than to each other
anonymous
  • anonymous
oh okay, so x is a positive number, meaning it would be greater than 0
anonymous
  • anonymous
Right?
jchick
  • jchick
Not necessarily it just means it isn't negative
jchick
  • jchick
D:log_{a}b \ is \ a\ \textgreater \ 0 \ \wedge \ a \neq 1 \ \wedge \ b\ \textgreater \ 0 \\ \\ D:log_{9}x \ x\ \textgreater \ 0 C.
anonymous
  • anonymous
so, what would i have to do to find the answer?
anonymous
  • anonymous
oh okay thank you.
jchick
  • jchick
No problem!

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