A community for students.
Here's the question you clicked on:
← 55 members online
 0 viewing
rebekita01
 2 years ago
Simplify using the doubleangle formula: x3  2x3 sin2 (x + 1).
A. x3 cos (x + 1)
B. x3 cos (2x + 1)
C. x3 cos 2(x + 1)
D. x3 cos2 (x + 1)
rebekita01
 2 years ago
Simplify using the doubleangle formula: x3  2x3 sin2 (x + 1). A. x3 cos (x + 1) B. x3 cos (2x + 1) C. x3 cos 2(x + 1) D. x3 cos2 (x + 1)

This Question is Closed

sasogeek
 2 years ago
Best ResponseYou've already chosen the best response.0I can't help you with this one, but I'll try to find someone else who can :) alright?

.Sam.
 2 years ago
Best ResponseYou've already chosen the best response.2\[x^3  2x^3 \sin^2 (x + 1)\] First factor out \(x^3\) \[x^3(12\sin^2(x+1))\] let u=x+1 \[x^3(12\sin^2(u))\] Using identity \[\cos(2u)=12\sin^2(u),\]we have \[x^3\cos(2u)\] Then \[x^3\cos(2(x+1))\]
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.