Home
О нас
Products
Services
Регистрация
Войти
Поиск
juliiasemibratova13
@juliiasemibratova13
July 2022
1
8
Report
ПОМОГИТЕ РЕШИТЬ, СРОЧНО!!!! ПОЖАЛУЙСТААААААААААААААААА!!!!!!!!!!!!
1. cos2x+sin²x=cosx+2
2. cos²x-cos2x=2-sinx
3. 3sin2x+8cos²x=7
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
basilionin
1. c
os2x+sin²x=cosx+2
2cos
²x-1+1-cos²x=cosx+2
cos²x-cosx-2=0
Делаем замену t=cosx, по модулю t не превосходит 1
t²-t-2=0
t = -1 или 2 (не подходит)
cosx = -1
x = pi + 2pin
2.
cos²x-cos2x=2-sinx
sin²x+sinx=2
Аналогично, sinx=1
x=pi/2+2pin
2 votes
Thanks 1
More Questions From This User
See All
juliiasemibratova13
August 2022 | 0 Ответы
spishite vstavlyaya propushennye bukvy i raskryvaya skobkiv chyom razlichiya v napisani
Answer
juliiasemibratova13
July 2022 | 0 Ответы
reshite uravnenie pozhalujsta x 2482 3x
Answer
juliiasemibratova13
July 2022 | 0 Ответы
reshite trigonometricheskoe uravnenie sinxsin5xcosxcos5x0
Answer
juliiasemibratova13
July 2022 | 0 Ответы
pomogite reshiiit sin2xsin4x1 cosxcos2xcos3xcos4x
Answer
juliiasemibratova13
July 2022 | 0 Ответы
22 3 1sin2x cosxsin2xcosx
Answer
juliiasemibratova13
July 2022 | 0 Ответы
podcherknite odnorodnye chleny v predlozhenie slovom mozhno ubit i ozhivitranit
Answer
juliiasemibratova13
October 2021 | 0 Ответы
kakie nacii prozhivayut v sirii
Answer
juliiasemibratova13
October 2021 | 0 Ответы
kto pravit siriej
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 "ПОМОГИТЕ РЕШИТЬ, СРОЧНО!!!! ПОЖАЛУЙСТААААААААААААААААА!!!!!!!!!!!! 1. cos2x+sin²..."
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
2cos²x-1+1-cos²x=cosx+2
cos²x-cosx-2=0
Делаем замену t=cosx, по модулю t не превосходит 1
t²-t-2=0
t = -1 или 2 (не подходит)
cosx = -1
x = pi + 2pin
2. cos²x-cos2x=2-sinx
sin²x+sinx=2
Аналогично, sinx=1
x=pi/2+2pin