Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
VIbarguen1
Group Title
Cal help?
find the intervals for which f is increasing or decreasing and locate all relative extrema on (0,2pi).
f(x)= cos x / 1 + sin ^ 2x
 11 months ago
 11 months ago
VIbarguen1 Group Title
Cal help? find the intervals for which f is increasing or decreasing and locate all relative extrema on (0,2pi). f(x)= cos x / 1 + sin ^ 2x
 11 months ago
 11 months ago

This Question is Closed

satellite73 Group TitleBest ResponseYou've already chosen the best response.0
did you take the derivative?
 11 months ago

VIbarguen1 Group TitleBest ResponseYou've already chosen the best response.0
Yep I got f'(x) = 2 sin(x) cos (2x) + 5 /cos (2x)3 )^2
 11 months ago

VIbarguen1 Group TitleBest ResponseYou've already chosen the best response.0
it is so long im not sure its right
 11 months ago

VIbarguen1 Group TitleBest ResponseYou've already chosen the best response.0
@satellite73
 11 months ago

VIbarguen1 Group TitleBest ResponseYou've already chosen the best response.0
@RaphaelFilgueiras
 11 months ago

RaphaelFilgueiras Group TitleBest ResponseYou've already chosen the best response.1
dw:1389408369353:dw
 11 months ago

VIbarguen1 Group TitleBest ResponseYou've already chosen the best response.0
could you help me solve that I have no idea how
 11 months ago

RaphaelFilgueiras Group TitleBest ResponseYou've already chosen the best response.1
use sin²(x)+cos²(x)=1> cos²(x)=1sin²(x), and then you will have only sin x in your equations
 11 months ago

RaphaelFilgueiras Group TitleBest ResponseYou've already chosen the best response.1
dw:1389408745656:dw
 11 months ago

VIbarguen1 Group TitleBest ResponseYou've already chosen the best response.0
raphael i'm sorry i am not following, where did the Z come from? and how does that get me to the extrema?
 11 months ago

RaphaelFilgueiras Group TitleBest ResponseYou've already chosen the best response.1
Z means k belong to the interger set,it's just a generical ans
 11 months ago

RaphaelFilgueiras Group TitleBest ResponseYou've already chosen the best response.1
x= 0 and 2 pi will be your solutions
 11 months ago

RaphaelFilgueiras Group TitleBest ResponseYou've already chosen the best response.1
and pi
 11 months ago

VIbarguen1 Group TitleBest ResponseYou've already chosen the best response.0
is that my min and max solutions?
 11 months ago

VIbarguen1 Group TitleBest ResponseYou've already chosen the best response.0
and it would be decreasing because its positive right?
 11 months ago

RaphaelFilgueiras Group TitleBest ResponseYou've already chosen the best response.1
min x= pi max are both x=0 and 2pi
 11 months ago

VIbarguen1 Group TitleBest ResponseYou've already chosen the best response.0
ok got it
 11 months ago

RaphaelFilgueiras Group TitleBest ResponseYou've already chosen the best response.1
when sin(x)> 0 it will be decreasing x in]0,pi[ when sinx(x)<0 it will be increasing x in ]pi,2pi[
 11 months ago

RaphaelFilgueiras Group TitleBest ResponseYou've already chosen the best response.1
decreasing f'<0 increasing f'>0
 11 months ago

VIbarguen1 Group TitleBest ResponseYou've already chosen the best response.0
thank you so much
 11 months ago

RaphaelFilgueiras Group TitleBest ResponseYou've already chosen the best response.1
you are welcome
 11 months 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.