Help Me Express y=cos(4t)+sqrt(3)*sin(4t) in terms of y=A cos(u-v)!

  • Thread starter Thread starter Troll
  • Start date Start date
  • Tags Tags
    Terms
AI Thread Summary
The discussion revolves around the mathematical expression y=cos(4t) + sqrt(3)*sin(4t) and the request to rewrite it in the form y=A cos(u-v). Participants emphasize the importance of showing work before receiving assistance, as per forum guidelines. One user acknowledges their previous over-explanation and expresses a willingness to adhere to the rules. The moderators stress that the original poster must demonstrate their attempts or challenges to facilitate effective help. The conversation highlights the collaborative nature of problem-solving in mathematics forums.
Troll
Messages
1
Reaction score
0
I have this Trig. problem. y=cos(4t) + sqrt(3)*sin(4t)
I'm supposed to express it in terms of y=A cos(u-v) :confused:
Any help would be appreciated! Thanks!
 
Physics news on Phys.org
sanitykey,

We appreciate all the work you put into that post, but unfortunately it is against Physics Forums Guidelines (which you agreed to) for you to do so much. Troll has to show some work on this problem before he can receive help. I've "soft deleted" your post and will restore it if Troll shows us that he is trying.
 
Sorry i got carried away, i understand i shouldn't of done so much. To be honest i found that problem quite challenging the method didn't come to me instantly (which i wasn't sure was right but i guess it is ok since you've looked over it Tom). What I'm trying to say is i'll try not to overdo it next time, i appreciate the time you're taking to modify my post Tom and I'm just glad to help :redface:
 
Troll, as Tom Mattson also mentions, before we can answer your questions,
you need to post what you have tried or where you are getting stuck. Then we can help point you in a successful direction.
 

Thread 'Finding the number of ways to arrange identical balls in a circle (3 different colors)'

I tried to combine those 2 formulas but it didn't work. I tried using another case where there are 2 red balls and 2 blue balls only so when combining the formula I got ##\frac{(4-1)!}{2!2!}=\frac{3}{2}## which does not make sense. Is there any formula to calculate cyclic permutation of identical objects or I have to do it by listing all the possibilities? Thanks
View full post »

Thread 'Greatest possible value of a constant in polynomial'

Since ##px^9+q## is the factor, then ##x^9=\frac{-q}{p}## will be one of the roots. Let ##f(x)=27x^{18}+bx^9+70##, then: $$27\left(\frac{-q}{p}\right)^2+b\left(\frac{-q}{p}\right)+70=0$$ $$b=27 \frac{q}{p}+70 \frac{p}{q}$$ $$b=\frac{27q^2+70p^2}{pq}$$ From this expression, it looks like there is no greatest value of ##b## because increasing the value of ##p## and ##q## will also increase the value of ##b##. How to find the greatest value of ##b##? Thanks
View full post »

Similar threads

To find the range of a given ##\sin## function
Replies
15
Views
2K
How to find out the sin value from cos
Replies
9
Views
2K
Express ##x^3+y^3## in terms of ##m## and ##n##
Replies
17
Views
3K
Deriving the Matrix for a 3 dimensional rotation
Replies
9
Views
3K
Help Checking a Complex Numbers Problems
Replies
7
Views
3K
Trig Equation — help to solve please: 0=cos^2(t)−t sin^2(t)
Replies
21
Views
3K
Making the denominator of a certain fraction real
Replies
5
Views
179
Solve ##\sqrt{\dfrac{x}{y}}+\sqrt{\dfrac{y}{x}}=4\dfrac{1}{4} \cdots##
Replies
10
Views
2K
Solving equations of the form ##a\sin\theta+b\cos\theta = c##
Replies
2
Views
2K
Prove the trigonometry identity and hence solve given problem
Replies
5
Views
2K

Hot Threads

Recent Insights

Back
Top