A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

What is the solution, or what are the solutions, of log9x2 = log925? no solution 5 only –5 only –5 and 5

  • This Question is Closed
  1. DanJS
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    there are a couple log rules that are always used, like 3 or 4 to be memorized

  2. DanJS
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    like the power one, you have log of x^2, power can pull down to front 2 log x

  3. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ok

  4. DanJS
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    actually here, both sides are log base 9 of (something) you can remove the logs by 9^[log9(x^2)] = x^2

  5. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    would it be the first?

  6. DanJS
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    \[\large b^{\log _{b}(x) } = x\] inverse of log function ,

  7. DanJS
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    x^2 = 25 then is left

  8. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    5

  9. DanJS
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    the log functions can only have + values of X the inverse of the log, the exponential function, can have any + or - value for X

  10. DanJS
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    |dw:1443480711313:dw|

  11. DanJS
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    overall shape is like that for the logs, the domain is x values greater than zero

  12. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.