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

Bug3392

f(x)=tan(x) Find the limit as x approaches pi/2 from the negative and positive sides then find the limit as x approaches 0. Help please!! :(

  • 2 years ago
  • 2 years ago

  • This Question is Open
  1. aryok08
    Best Response
    You've already chosen the best response.
    Medals 0

    i think if you make a graphic you can solve the problem more easy , substitute the values of x and make the graphic.

    • 2 years ago
  2. yasin08
    Best Response
    You've already chosen the best response.
    Medals 0

    Here how you can proceed,tanx at the positive side of pi/2 (right hand) takes nonpositive values and at the left side it takes nonnegative values now for limit to exist limit from tight and left must exist and be equal to each other so only possible choice in this case is both to be 0 however as one approaches to pi/2 sinx increase and cosx decreases leading to tanx become larger over any bounds so at left side tangent goes to infinity on the posive side and at right limit tangent goes to inifinity at the negative side so limit does not exist

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

    \[\tan x=\sin x/\cos x\]\[\cos (pi/2) = 0\] so as tan x approaches \[pi/2\] from right or left it goes to infinity as cos x gets smaller and smaller.

    • one year ago
  4. adi171
    Best Response
    You've already chosen the best response.
    Medals 0

    look at the graph of tanx.... and see where does it tends when it is approaching pi/2... so it is infinity...from both sides...!!!

    • 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.