Home
О нас
Products
Services
Регистрация
Войти
Поиск
ЕркебуланМанкеев
@ЕркебуланМанкеев
July 2022
1
3
Report
Решите уравнение f'(x)=0
f(x)=3cosx+4sinx-5x
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
ShirokovP
Verified answer
F'(x)= - 3sinx + 4cosx - 5
4 cosx - 3sinx = 5
16cos^2x - 24sinxcosx + 9sin^2x = 25*1
16cos^2x - 24sinxcosx + 9sin^2x = 25*(sin^2x + cos^2x)
16cos^2x - 24sinxcosx + 9sin^2x = 25sin^2x + 25cos^2x
- 9cos^2x - 24sinxcosx - 16 sin^2x = 0 /:(-1)
9cos^2x + 24sinxcosx + 16sin^2x = 0
(3cosx + 4sinx)^2 = 0
3cosx + 4sinx = 0 /:cosx ≠ 0
4tgx + 3 = 0
4tgx = - 3
tgx= - 3/4
x= - arctg(3/4) + pik, k ∈Z
3 votes
Thanks 4
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 "Решите уравнение f'(x)=0 f(x)=3cosx+4sinx-5x..."
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
F'(x)= - 3sinx + 4cosx - 54 cosx - 3sinx = 5
16cos^2x - 24sinxcosx + 9sin^2x = 25*1
16cos^2x - 24sinxcosx + 9sin^2x = 25*(sin^2x + cos^2x)
16cos^2x - 24sinxcosx + 9sin^2x = 25sin^2x + 25cos^2x
- 9cos^2x - 24sinxcosx - 16 sin^2x = 0 /:(-1)
9cos^2x + 24sinxcosx + 16sin^2x = 0
(3cosx + 4sinx)^2 = 0
3cosx + 4sinx = 0 /:cosx ≠ 0
4tgx + 3 = 0
4tgx = - 3
tgx= - 3/4
x= - arctg(3/4) + pik, k ∈Z