Quantcast

Got Homework?

Connect with other students for help. It's a free community.

  • across
    MIT Grad Student
    Online now
  • laura*
    Helped 1,000 students
    Online now
  • Hero
    College Math Guru
    Online now

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

FreeTrader Group Title

Can you please help guide me through the last steps in this equation involving logarithms?

  • 3 years ago
  • 3 years ago

  • This Question is Closed
  1. FreeTrader Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    \[1+\ln x = \ln4\]

    • 3 years ago
  2. FreeTrader Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    I am solving for x. Can you nudge me about the ln properties?

    • 3 years ago
  3. jim_thompson5910 Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    1+ln(x) = ln(4) 1 = ln(4)-ln(x) 1 = ln(4/x) 4/x = e^1 4/x = e 4 = ex 4/e = x x = 4/e

    • 3 years ago
  4. FreeTrader Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    Thanks, I'll see if I can follow this on paper here... Just a sec...

    • 3 years ago
  5. jim_thompson5910 Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    The properties I used were ln(x) - ln(y) = ln(x/y) and ln(x) = y converts to e^y = x

    • 3 years ago
  6. FreeTrader Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    I see the division coming into play with the subtraction.

    • 3 years ago
  7. FreeTrader Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    The last one is the key I was missing.

    • 3 years ago
  8. satellite73 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    you can also try \[\ln(x)=\ln(4)-1\] \[x=e^{\ln(4)-1}=e^{\ln(4)}\times e^{-1}=\frac{4}{e}\]

    • 3 years ago
  9. FreeTrader Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    ln x = e to what power gives us x Logarithms confuse me to no end, despite how "simple" they are supposed to be.

    • 3 years ago
  10. FreeTrader Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    I have duplicated the algebra, and it makes sense. Are you aware of a really good ln tutorial with exercises?

    • 3 years ago
  11. jim_thompson5910 Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    try this page: http://www.purplemath.com/modules/solvelog.htm

    • 3 years ago
  12. FreeTrader Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    Thank you. If you answer that tutorial question in the new Q I posted, I'd be pleased to pin a medal upon you.

    • 3 years ago
    • Attachments:

See more questions >>>

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.