wgdelgado
22.01.2021 •
Mathematics
WILL GIVE BRAINLIEST
4cos4(x)-5cos2(x)+1=0 from[0,2pi]
If you could can you give steps please
Solved
Show answers
More tips
- L Leisure and Entertainment Couchsurfing: A New Way to Travel...
- G Goods and services Which TV is better - LCD or Plasma?...
- S Sport How to Learn to Pull Up on Monkey Bars?...
- L Leisure and Entertainment Scrapbooking: What is it and Why is it Becoming More Popular?...
- C Computers and Internet Where did torrents.ru move to?...
- B Business and Finance Understanding Cash Flow: What It Is and How It Works...
- C Computers and Internet What Are Peers and Seeds in Torrenting?...
- H Health and Medicine 10 Simple Techniques on How to Boost Your Mood...
- G Goods and services How to Choose the Right High Chair for Your Baby?...
- S Style and Beauty Learn how to tie a keffiyeh on your head like a pro...
Answers on questions: Mathematics
- M Mathematics Help plz !! What are the dimensions of AB?...
- M Mathematics Explain why 0 divided by any number is either 0 or infinity....
- M Mathematics Find the domain: log2(1/64)=x...
- M Mathematics I need help with nested fractions...
- M Mathematics The graph of a function f is the segment from (0, 1) to (2, 3), including the endpoints. What is the domain of f?...
- M Mathematics Write a linear function for the data in each table. SEE EXAMPLE 2 19....
- M Mathematics 1.Use binomial to expand. a.b.c.d....
- M Mathematics See question in image....
- M Mathematics Solve the inequality- 5/2(3x+4) 6-3x. Show your work....
- M Mathematics How do you find solutions to equations in the form x^2= p and x^2= p? Examples can be included...
Ответ:
x = {0, π/3, π, 4π/3}
Step-by-step explanation:
4cos⁴(x) - 5cos²(x) + 1 = 0
(u² - 1)(4u² - 1) = 0
u² - 1 = 0
u² = 1
u = ± 1
cos x = ± 1
=> x = 0 or π
4u² - 1 = 0
4u² = 1
u² = 1/4
u = ± 1/2
cos x = ± 1/2
=> x = π/3 or 4π/3
Therefore, x = {0, π/3, π, 4π/3}.
Ответ:
Half 37.5
Put it into a decimal