Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
Calle87
Group Title
Need some help identifying the increase intervals of the graph of xtanx
 2 years ago
 2 years ago
Calle87 Group Title
Need some help identifying the increase intervals of the graph of xtanx
 2 years ago
 2 years ago

This Question is Closed

Calle87 Group TitleBest ResponseYou've already chosen the best response.0
dw:1349987981581:dw
 2 years ago

Venomblast Group TitleBest ResponseYou've already chosen the best response.0
is this in radian?
 2 years ago

Calle87 Group TitleBest ResponseYou've already chosen the best response.0
i know this is a even function about the y axis, and the domain and asymptotes are pi/2,pi/2
 2 years ago

Calle87 Group TitleBest ResponseYou've already chosen the best response.0
just wondering how to show the intervals of increase and decrease
 2 years ago

Venomblast Group TitleBest ResponseYou've already chosen the best response.0
so 90 degrees <x<90 degrees
 2 years ago

Calle87 Group TitleBest ResponseYou've already chosen the best response.0
usually i take f'x and solve for 0
 2 years ago

Venomblast Group TitleBest ResponseYou've already chosen the best response.0
i see no 0. is this is an equation?
 2 years ago

Calle87 Group TitleBest ResponseYou've already chosen the best response.0
f'x=tanx+xsec^2x
 2 years ago

Calle87 Group TitleBest ResponseYou've already chosen the best response.0
@zepdrix hey do you think you could explain how they designate zero as a critical point?
 2 years ago

Calle87 Group TitleBest ResponseYou've already chosen the best response.0
dw:1349988599121:dw
 2 years ago

Calle87 Group TitleBest ResponseYou've already chosen the best response.0
should i just know that, from the x and y intercepts and the even symetry? and a basic knowledge of the tanx graph?
 2 years ago

Calle87 Group TitleBest ResponseYou've already chosen the best response.0
because when i set my derivative = 0 i have problems
 2 years ago

zepdrix Group TitleBest ResponseYou've already chosen the best response.1
dw:1349988578994:dw Hmm yah this derivative does seem to be putting up a fight :\ Hmmmmm
 2 years ago

Calle87 Group TitleBest ResponseYou've already chosen the best response.0
i tried changing everything to sines and cosines and still a mess
 2 years ago

zepdrix Group TitleBest ResponseYou've already chosen the best response.1
dw:1349988855254:dw Ah good call, I think that's how you find it! :) The top is a big mess, yes. But the bottom I think you can solve for a critical point.
 2 years ago

Calle87 Group TitleBest ResponseYou've already chosen the best response.0
dw:1349988866328:dw
 2 years ago

Venomblast Group TitleBest ResponseYou've already chosen the best response.0
get the common denominator. so multiply cosx on the 1st term
 2 years ago

Calle87 Group TitleBest ResponseYou've already chosen the best response.0
thats it zep!!!!!!!!
 2 years ago

Calle87 Group TitleBest ResponseYou've already chosen the best response.0
@zepdrix :D
 2 years ago

Venomblast Group TitleBest ResponseYou've already chosen the best response.0
i guess he/she got it from here
 2 years ago

zepdrix Group TitleBest ResponseYou've already chosen the best response.1
dw:1349989056773:dw
 2 years ago

Calle87 Group TitleBest ResponseYou've already chosen the best response.0
i think the top should be ignored
 2 years ago

Calle87 Group TitleBest ResponseYou've already chosen the best response.0
the book doesent have a mention of it
 2 years ago

Calle87 Group TitleBest ResponseYou've already chosen the best response.0
neither does the graph
 2 years ago

Calle87 Group TitleBest ResponseYou've already chosen the best response.0
the only root is 0
 2 years ago

Calle87 Group TitleBest ResponseYou've already chosen the best response.0
http://www.wolframalpha.com/input/?i=graph+xtanx
 2 years ago

Calle87 Group TitleBest ResponseYou've already chosen the best response.0
maybe it would matter if the interval was larger than pi/2,pi/2
 2 years ago

zepdrix Group TitleBest ResponseYou've already chosen the best response.1
yah fair enough c:
 2 years ago

zepdrix Group TitleBest ResponseYou've already chosen the best response.1
Hmmm wait what was I saying? cos x = 0 Hmm that should give you x = pi/2 right? why did i say it was x = 0? Hmmmmmmmmmmmmmmmmm Now I'm back to being confused about where the 0 critical point is coming from :D lol
 2 years ago
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
 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.