A community for students.
Here's the question you clicked on:
← 55 members online
 0 viewing
cwrw238
 4 years ago
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.
cwrw238
 4 years ago
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.

This Question is Closed

cwrw238
 4 years ago
Best ResponseYou've already chosen the best response.0i've got as far as finding dy/dx in terms of t.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0x = sin t dx / dt = cos t y = cos 2t dy/dt = 2sin2t

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0dy/dx = 2sin2t / cos t

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0dy/dx = (dy / dt )/(dx/dt)

cwrw238
 4 years ago
Best ResponseYou've already chosen the best response.0ahhh  ok my stupidity i got dy/dt wrong!!!!

cwrw238
 4 years ago
Best ResponseYou've already chosen the best response.0my brains in low gear today....
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.