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irvine Group Title

What is the solution of log 2x – 3^125 = 3 ? Please help im taking a test right now

  • 3 years ago
  • 3 years ago

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  1. Hero Group Title
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    Hi

    • 3 years ago
  2. irvine Group Title
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    hi

    • 3 years ago
  3. jimmyrep Group Title
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    is LHS = log of (2x - 3^125) or just log of 2x?

    • 3 years ago
  4. irvine Group Title
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    hmm. i have no clue the question is exactly the way i posted it that's what confused me

    • 3 years ago
  5. Hero Group Title
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    I was just about to ask that

    • 3 years ago
  6. irvine Group Title
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    That is basically why i dont understand it

    • 3 years ago
  7. gabrielbean Group Title
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    iw ould say move the log2x to one side on its own then re-arrange to remove the log then solve for x log2x=3+3^125 (assuming log is to base ten) 10^(3+3^125)=2x x=(10^(3+3^125))/2 i think...

    • 3 years ago
  8. jimmyrep Group Title
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    yes - thats right

    • 3 years ago
  9. irvine Group Title
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    thank you so much! :)

    • 3 years ago
  10. Hero Group Title
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    For some reason, I keep getting false for the answer

    • 3 years ago
  11. gabrielbean Group Title
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    so do i but that may be to do with the calculators memory

    • 3 years ago
  12. irvine Group Title
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    maybe

    • 3 years ago
  13. Hero Group Title
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    wolfram alpha's solution: http://www.wolframalpha.com/input/?i=log%282x%29%3D3%2B3^125%2C+x&a=*FunClash.log-_*Log10.Log-

    • 3 years ago
  14. irvine Group Title
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    i went to this website too and i got a completely different answer i guess it might be the way i typed the equation in

    • 3 years ago
  15. Hero Group Title
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    How did you type it in, and what website was that?

    • 3 years ago
  16. Hero Group Title
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    Ah, I think it's log base 2 of x

    • 3 years ago
  17. irvine Group Title
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    log 2x – 3^125 = 3 and the website was wolframalpha too

    • 3 years ago
  18. irvine Group Title
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    but the choices in the test are way different though

    • 3 years ago
  19. Hero Group Title
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    Hold on a sec

    • 3 years ago
  20. Hero Group Title
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    What are the answer choices?

    • 3 years ago
  21. irvine Group Title
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    x = 1 x = 4 x = 7/3 x = 1/3

    • 3 years ago
  22. Hero Group Title
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    That's bizarre. I've tried every possible way. It all comes out to the same answer

    • 3 years ago
  23. irvine Group Title
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    what answer did you get?

    • 3 years ago
  24. Hero Group Title
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    http://www.wolframalpha.com/input/?i=log2x-3^125%3D3

    • 3 years ago
  25. Hero Group Title
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    Exact result gives one form, alternate form gives false

    • 3 years ago
  26. irvine Group Title
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    hmmm.. this thing is so complicated :( i think im going to give up

    • 3 years ago
  27. Hero Group Title
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    Yeah, you should just guess

    • 3 years ago
  28. Hero Group Title
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    wait

    • 3 years ago
  29. irvine Group Title
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    that is what i am going to do

    • 3 years ago
  30. Hero Group Title
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    Very bizarre

    • 3 years ago
  31. irvine Group Title
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    I know I guessed 7/3 what do you think?

    • 3 years ago
  32. Hero Group Title
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    guess 1/3

    • 3 years ago
  33. irvine Group Title
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    okay that sounds better

    • 3 years ago
  34. irvine Group Title
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    Thanks for your help :)

    • 3 years ago
  35. Hero Group Title
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    What was the answer?

    • 3 years ago
  36. irvine Group Title
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    idk yet im on question 16 of the test and there is 4 more i will tell you once im done

    • 3 years ago
  37. Hero Group Title
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    Okay

    • 3 years ago
  38. irvine Group Title
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    they wont show me the correct answer but it was not 1/3

    • 3 years ago
  39. Hero Group Title
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    It wasn't any of them. It was a bogus question

    • 3 years ago
  40. irvine Group Title
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    I know but it doesnt really matter anymore since i still have a good grade in the class I just hope that i dont get anymore questions like this one

    • 3 years ago
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