Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
cwrw238
Group Title
I seem to have a mental block with this problem  can someone help please.
If x = sin t and y = cos 2t find dy/dx in terms of x and prove that d^2y / dx^2 + 4 = 0.
 one year ago
 one year ago
cwrw238 Group Title
I seem to have a mental block with this problem  can someone help please. If x = sin t and y = cos 2t find dy/dx in terms of x and prove that d^2y / dx^2 + 4 = 0.
 one year ago
 one year ago

This Question is Closed

cwrw238 Group TitleBest ResponseYou've already chosen the best response.0
i've got as far as finding dy/dx in terms of t.
 one year ago

Yahoo! Group TitleBest ResponseYou've already chosen the best response.1
x = sin t dx / dt = cos t y = cos 2t dy/dt = 2sin2t
 one year ago

Yahoo! Group TitleBest ResponseYou've already chosen the best response.1
dy/dx = 2sin2t / cos t
 one year ago

Yahoo! Group TitleBest ResponseYou've already chosen the best response.1
dy/dx = (dy / dt )/(dx/dt)
 one year ago

cwrw238 Group TitleBest ResponseYou've already chosen the best response.0
ahhh  ok my stupidity i got dy/dt wrong!!!!
 one year ago

cwrw238 Group TitleBest ResponseYou've already chosen the best response.0
thanks yahoo
 one year ago

Yahoo! Group TitleBest ResponseYou've already chosen the best response.1
Welcome...)
 one year ago

cwrw238 Group TitleBest ResponseYou've already chosen the best response.0
my brains in low gear today....
 one year 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.