Home
О нас
Products
Services
Регистрация
Войти
Поиск
Lika1358
@Lika1358
July 2022
1
6
Report
8 sin^2 5x+ 6 cos 5x-3=0 помогите пожалуйста...
Please enter comments
Please enter your name.
Please enter the correct email address.
Agree to
terms of service
You must agree before submitting.
Send
Answers & Comments
irka1804
Sin^2(5x) = 1 - cos^2(5x)
8 - 8cos^2(5x) + 6cos5x - 3 = 0
8cos^2(5x) - 6cos5x -5 = 0
t = cos5x
8t^2 - 6t - 5 = 0
t = (6 +-√(36 + 160)) / 16 = (6 +- 14) / 16
t = 20/16 не подходит, так как cos5x <= 1
t = -8/16 = -1/2
cos5x = -1/2
5x = +-2π/3 + 2πn, n ∈ Z
x = +- 2π/15 + 2πn / 5, n ∈ Z
1 votes
Thanks 1
More Questions From This User
See All
Lika1358
August 2022 | 0 Ответы
16pomogite pozhalujsta15c306ceb8f4a348478da324c87ea082 14939
Answer
Lika1358
August 2022 | 0 Ответы
2-3=0...
Answer
Lika1358
August 2022 | 0 Ответы
pomogite pozhalujsta 2 sin2 2xcos2x1
Answer
Lika1358
July 2022 | 0 Ответы
2-3=0...
Answer
Lika1358
July 2022 | 0 Ответы
cos4 x pomogite pliiiiz
Answer
Lika1358
July 2022 | 0 Ответы
ctg2 3x 2 0 pomogite pozhalustaaaa
Answer
Lika1358
July 2022 | 0 Ответы
2 cos2 4 x 3 sin2 4x 2 cos 4x0 pozhalujsta pomogite
Answer
Lika1358
July 2022 | 0 Ответы
2 30 ochen nado pomogite pozhalujsta
Answer
Lika1358
July 2022 | 0 Ответы
reshit uravnenie sposobom privedeniya k odnoj iz funkcii 2 sin2 2xcos2x1 podro
Answer
рекомендуемые вопросы
rarrrrrrrr
August 2022 | 0 Ответы
o chem dolzhny pozabotitsya v pervuyu ochered vzroslye pri organizacionnom vyvoze n
danilarsentev
August 2022 | 0 Ответы
est dva stanka na kotoryh vypuskayut odinakovye zapchasti odin proizvodit a zapcha
myachina8
August 2022 | 0 Ответы
najti po grafiku otnoshenie v3v1 v otvetah napisano 9 no nuzhno reshenie
ydpmn7cn6w
August 2022 | 0 Ответы
Choose the correct preposition: 1.I am fond (out,of,from) literature. 2.where ar...
millermilena658
August 2022 | 0 Ответы
opredelite kak sozdavalas i kto sozdaval arabskoe gosudarstvo v kracii
MrZooM222
August 2022 | 0 Ответы
ch ajtmanov v rasskaze krasnoe yabloko ispolzuet metod rasskaz v rasskaze opi
timobila47
August 2022 | 0 Ответы
kakovo bylo naznachenie kazhdoj iz chastej vizantijskogo hrama pomogite pozhalujsta
ivanyyaremkiv
August 2022 | 0 Ответы
moment. 6....
pozhalujsta8b98a56c0152a07b8f4cbcd89aa2f01e 97513
sarvinozwakirjanova
August 2022 | 0 Ответы
pomogite pozhalusto pzha519d7eb8246a08ab0df06cc59e9dedb 6631
×
Report "8 sin^2 5x+ 6 cos 5x-3=0 помогите пожалуйста..."
Your name
Email
Reason
-Select Reason-
Pornographic
Defamatory
Illegal/Unlawful
Spam
Other Terms Of Service Violation
File a copyright complaint
Description
Helpful Links
О нас
Политика конфиденциальности
Правила и условия
Copyright
Контакты
Helpful Social
Get monthly updates
Submit
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
8 - 8cos^2(5x) + 6cos5x - 3 = 0
8cos^2(5x) - 6cos5x -5 = 0
t = cos5x
8t^2 - 6t - 5 = 0
t = (6 +-√(36 + 160)) / 16 = (6 +- 14) / 16
t = 20/16 не подходит, так как cos5x <= 1
t = -8/16 = -1/2
cos5x = -1/2
5x = +-2π/3 + 2πn, n ∈ Z
x = +- 2π/15 + 2πn / 5, n ∈ Z