Home
О нас
Products
Services
Регистрация
Войти
Поиск
mashin1976
@mashin1976
August 2021
1
1
Report
Помогите решить!!! Срочно!!!
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
shevtsovavalia
1)Пусть tgx=n
27ⁿ+81*27⁻ⁿ-30=0
27ⁿ+81/27ⁿ-30=0
27²ⁿ-30*27ⁿ+81=0
2)Пусть 27ⁿ =b
b²-30b+81=0
D=576
b₁=27⇒27ⁿ=27⇒n=1
b₂=3⇒3³ⁿ=3⇒n=1/3
3)a)tg²x=1⇒tgx=1⇒x=π/4+πn
tgx=-1⇒x=-π/4+πn
b)tg²x=1/3
tgx=√3/3⇒x=π/6+πn
tgx=-√3/3⇒x=-π/6+πn
4)[3π/2;3π]
x=9π/4; 7π/4;11π/4; 11π/6; 13π/6; 16π/6.
1 votes
Thanks 1
mashin1976
Спасибо!!!
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!!!..."
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
27ⁿ+81*27⁻ⁿ-30=0
27ⁿ+81/27ⁿ-30=0
27²ⁿ-30*27ⁿ+81=0
2)Пусть 27ⁿ =b
b²-30b+81=0
D=576
b₁=27⇒27ⁿ=27⇒n=1
b₂=3⇒3³ⁿ=3⇒n=1/3
3)a)tg²x=1⇒tgx=1⇒x=π/4+πn
tgx=-1⇒x=-π/4+πn
b)tg²x=1/3
tgx=√3/3⇒x=π/6+πn
tgx=-√3/3⇒x=-π/6+πn
4)[3π/2;3π]
x=9π/4; 7π/4;11π/4; 11π/6; 13π/6; 16π/6.