A community for students.
Here's the question you clicked on:
 0 viewing

This Question is Closed

inkyvoyd
 2 years ago
Best ResponseYou've already chosen the best response.0Well, what's the first derivative?

inkyvoyd
 2 years ago
Best ResponseYou've already chosen the best response.0use the product rule...

Idealist
 2 years ago
Best ResponseYou've already chosen the best response.0The first derivative is (cosx)^2(sinx)^2. But how do I take the derivative of that?

inkyvoyd
 2 years ago
Best ResponseYou've already chosen the best response.0well, remember that cos(a+b)=cos a cos bsin a sin b...

inkyvoyd
 2 years ago
Best ResponseYou've already chosen the best response.0in other words, use the double angle formula for to reduce the following expression you have obtained. And then use the chain rule.

Sujay
 2 years ago
Best ResponseYou've already chosen the best response.2\[f'(x)=cosx(\cos(x))+(\sin(x)\sin(x))\] Product Rule and Derivatives of Trigs Simplify. \[f'(x)=\cos ^{2}x\sin ^{2}x\] \[f''(x)=2\cos(x)(\sin(x))2\sin(x)(\cos(x))\] Derivative of Trig and Chain Rule

hcmathkim
 2 years ago
Best ResponseYou've already chosen the best response.0bring the power down, keep the inside, differentiate inside

inkyvoyd
 2 years ago
Best ResponseYou've already chosen the best response.0Since no one seems to get it USE COS^2 XSIN^2 X=COS(2x) TO SIMPLIFY EXPRESSION

inkyvoyd
 2 years ago
Best ResponseYou've already chosen the best response.0simplified expression is dy/dx=cos(2x) then take the dervative of that

inkyvoyd
 2 years ago
Best ResponseYou've already chosen the best response.0@Idealist are you followign?

Idealist
 2 years ago
Best ResponseYou've already chosen the best response.0Yes. I got it. Thanks for the help, guys.

inkyvoyd
 2 years ago
Best ResponseYou've already chosen the best response.0I like medals. LOL but yeah, nice to see :) let me know your final answer so I can check it
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.