Home
О нас
Products
Services
Регистрация
Войти
Поиск
Liffkoil36
@Liffkoil36
June 2022
1
6
Report
2cos^4x=3 sin^2х-2 помогите кто может,даю 20 БАЛЛОВ!!!!
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
DariosI
Verified answer
2cos⁴x=3sin²x-3+1
2cos⁴x=3(sin²x-cos²x-sin²x)+1
2cos⁴x=3(-cos²x)
+1
2cos⁴x+3cos²x-1=0
cos²x=y
2y²+3y-1=0
D=9+4*2=17
y=(3-√17)/4
y=(3+√17)/4 не подходит
cos²x=
(3-√17)/4
cosx=+-√(3-√17)/2
x=+-(arccos(
-√(3-√17)/2))+2
πn
x=+-(arccos(
√(3-√17)/2))+2
πn
1 votes
Thanks 1
More Questions From This User
See All
Liffkoil36
August 2022 | 0 Ответы
41x10 29x10 2 xumnozhit 2 vozvedenie v stepen
Answer
Liffkoil36
August 2022 | 0 Ответы
25 najdite sina
Answer
Liffkoil36
August 2022 | 0 Ответы
chto ne otnositsya k sobytiyam oktyabrya 1917 g vyberi otvet 1peredacha vsej vlasti
Answer
Liffkoil36
August 2022 | 0 Ответы
logarifmy nomera 456 s resheniem 45 ballov
Answer
Liffkoil36
July 2022 | 0 Ответы
ukazhite lyubye tri socialnye problemy kotorye yavlyayutsya predmetom mezhdisciplinar
Answer
Liffkoil36
July 2022 | 0 Ответы
6nomersrochno uravneniya himiya
Answer
Liffkoil36
July 2022 | 0 Ответы
2cos2p a dayu 15 ballov podrobno s resheniem
Answer
Liffkoil36
July 2022 | 0 Ответы
rebyat nomer 2 pomogite pliz
Answer
Liffkoil36
March 2022 | 0 Ответы
4 x 2 dayu 20 ballov pozhalujsta s fotografiej grafika
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 "2cos^4x=3 sin^2х-2 помогите кто может,даю 20 БАЛЛОВ!!!!..."
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
Verified answer
2cos⁴x=3sin²x-3+12cos⁴x=3(sin²x-cos²x-sin²x)+1
2cos⁴x=3(-cos²x)+1
2cos⁴x+3cos²x-1=0
cos²x=y
2y²+3y-1=0
D=9+4*2=17
y=(3-√17)/4
y=(3+√17)/4 не подходит
cos²x=(3-√17)/4
cosx=+-√(3-√17)/2
x=+-(arccos(-√(3-√17)/2))+2πn
x=+-(arccos(√(3-√17)/2))+2πn