anonymous
  • anonymous
What is the inverse function of y=4*(9)^x
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
That y is equal to four times nine to the power of x
freckles
  • freckles
Have you tried solving for x yet?
freckles
  • freckles
you could first put it in this form: \[p=a^x \text{ then rewrite as } \log_a(p)=x\]

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freckles
  • freckles
that is you divide both sides by 4 first you will have that desired form I mentioned .
anonymous
  • anonymous
I am lost I don't know how to do this
anonymous
  • anonymous
yo freckles log is too advanced original question is y=4*(9)^x inverse, flip the x and y x = 4*(9)^y solve for x
anonymous
  • anonymous
?
anonymous
  • anonymous
sorry i meant solve for y
anonymous
  • anonymous
http://www.coolmath.com/algebra/16-inverse-functions/05-how-to-find-the-inverse-of-a-function-01
anonymous
  • anonymous
I don't know how
anonymous
  • anonymous
That link shows fractions my problem doesn't have fraction
freckles
  • freckles
\[\text{ In general, for something like: } y=b(a)^x \\ \text{ You can solve for } x \text{ by first doing } \\ \text{ division of } b \text{ on both sides } \\ \frac{y}{b}=a^x \\ \text{ now recall } \frac{y}{b}=a^x \text{ is equivalent to } \log_a(\frac{y}{b})=x\]
freckles
  • freckles
just using what I had above and replacing my p with y/b
anonymous
  • anonymous
?

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