A community for students.
Here's the question you clicked on:
 0 viewing
peachpi
 4 years ago
lim arcsec (x)/√(x1)
x>1
I know from using L'Hospital's Rule that this is √2, but how do I do this w/o that rule or using derivatives?
peachpi
 4 years ago
lim arcsec (x)/√(x1) x>1 I know from using L'Hospital's Rule that this is √2, but how do I do this w/o that rule or using derivatives?

This Question is Closed

Rogue
 4 years ago
Best ResponseYou've already chosen the best response.1\[\lim_{x \rightarrow 1} (\cos^{1} (1/x)) / \sqrt{x  1})\]

Rogue
 4 years ago
Best ResponseYou've already chosen the best response.1There is a way to do this using many substitutions but it often gets complicated.

Rogue
 4 years ago
Best ResponseYou've already chosen the best response.1\[\mu = \sqrt{x  1}, \mu ^{2} = x  1, x = \mu ^{2} + 1\]

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0I see what you're doing, but even that seems a little complex for a beginning calc student. I was helping a kid with his homework last night and that question was there. For the life of me I can't figure out how they were supposed to do it

Rogue
 4 years ago
Best ResponseYou've already chosen the best response.1\[\lim_{\mu \rightarrow 0} (Arcsec (\mu ^{2} + 1))/\mu)\]

Rogue
 4 years ago
Best ResponseYou've already chosen the best response.1Yeah, for introductory Calc its very complicated, the teacher may have made a mistake or something. My teacher gave a do now with a question like that this year, but it was with regular trig functions, not inverse trig, so it was solvable via substitution. This question requires some esoteric identities if one wanted to solve this without L'hospital's.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Right, at this stage they're really limited in what they can do with inverse trig functions. Thanks
Ask your own question
Sign UpFind more explanations on OpenStudy
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
 Engagement 19 Mad Hatter
 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.