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

jpjones

find f'(x) if f(x) = ln(sinx)

  • one year ago
  • one year ago

  • This Question is Closed
  1. love_math
    Best Response
    You've already chosen the best response.
    Medals 1

    derivative of sinx divided by sinx

    • one year ago
  2. satellite73
    Best Response
    You've already chosen the best response.
    Medals 1

    \[\frac{d}{dx}[\ln(f(x))]=\frac{f'(x)}{f(x)}\] via the chain rule

    • one year ago
  3. satellite73
    Best Response
    You've already chosen the best response.
    Medals 1

    oops

    • one year ago
  4. love_math
    Best Response
    You've already chosen the best response.
    Medals 1

    cotx

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

    f(x) = ln(sinx) y' = (1/sinx)(cosx) y' = cosx/sinx y' = cotx

    • one year ago
  6. sauravshakya
    Best Response
    You've already chosen the best response.
    Medals 1

    f'(x)=d(lnsinx)/dx = {d(ln sinx) /dsinx} * {dsinx /dx} ={1/sinx} *{cosx} =cosx/sinx =cotx

    • one year ago
  7. sauravshakya
    Best Response
    You've already chosen the best response.
    Medals 1

    got it?

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

    oops? @satellite73

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

    why cot x and not tan x

    • one year ago
  10. satellite73
    Best Response
    You've already chosen the best response.
    Medals 1

    there was an erroneous tangent floating around, it is gone

    • one year ago
  11. satellite73
    Best Response
    You've already chosen the best response.
    Medals 1

    oh look, it came back!!

    • one year ago
  12. sauravshakya
    Best Response
    You've already chosen the best response.
    Medals 1

    U can write it interms of tan x too

    • one year ago
  13. sauravshakya
    Best Response
    You've already chosen the best response.
    Medals 1

    BUT: f'(x)= 1/tan x

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

    thanks

    • one year 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.