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

JingleBells Group Title

In Video lecture 05 round about 37' where Pr. Jerison draws the f(x)=tan(x) and f(x)=arctan(x) the two curve crosses where if I plug in real data I can't get the same results, did he lowered the curve to just to illustrate the symmetry along the y=x line or do you have to do some kind of stretch to get the same picture?

  • 2 years ago
  • 2 years ago

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

    both are inverse function.........so they are symmetric to line y=x

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

    Thanks, that bit I get, what I'm not sure about is that does the graph of tanx and arctanx overlap or not.

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

    yes they meet at y=x=1

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

    So do you know what I could do to get the same graph as in the video where the two curves cross each other?

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

    no, u cant draw that graps....because we are not accurate. But u can roughly sketch it

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

    I have quick graph on my iPhone and the two graphs never cross that's why I'm asking :-)

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

    |dw:1340852698875:dw|

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

    Thanks but if you plotted the two graphs with real values of tan(x) and arctan(x) they don't cross at all.

    • 2 years ago
  9. kutulu Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    if you watch the recitation video for Session 15, it addresses your question. The profession drew the graph of arctan wrong. Within the single domain of -pi/2 -> pi/2, the only place that tan and arctan cross is at x=0. Arctan should be *below* y=x everywhere else while tan should be *above* y=x everywhere else.

    • 2 years ago
  10. kutulu Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    erm. make that The professor* drew the graph...

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

    Thanks a million! I'm using iTunes U to watch the videos and I will, from now, watch the recitations on the web! :-)

    • 2 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.