Home
О нас
Products
Services
Регистрация
Войти
Поиск
stiki
@stiki
July 2022
1
8
Report
Решите уравнение [tex]7sin^2x+4sinxcosx-3cos^2x=0[/tex]
укажите корни, принадлежащие отрезку [tex][ \frac{3 \pi }{2} ; \frac{5 \pi }{2} ][/tex]
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
mikael2
Verified answer
7sin²x+4sinxcosx-3cos²x=0
делим на сos²x
7tg²x+4tgx-3=0 D=16+84=100 √D=10
x1=1/14(-4+10)=6/14=3/7
x2=1/14(-4-10)= -1
x=arctg(3/7)+πk k∈Z
x=-π/4+πk k∈Z
корни на отрезке
0 votes
Thanks 0
stiki
почему корень 3\7 вдруг?
stiki
понял, извините
More Questions From This User
See All
stiki
August 2022 | 0 Ответы
tex s tochnostyu do 0001
Answer
stiki
August 2022 | 0 Ответы
perevedite tekst golf the modern game of golf was invented in scotland in the 18
Answer
stiki
August 2022 | 0 Ответы
pri perehode elektronov v atomah vodoroda s chetvertoj stacionarnoj orbity na vto43a0710554d64ae6b4a1b38c7ef8527b 94804
Answer
stiki
August 2022 | 0 Ответы
mc05adb07a5a2fe501b802d26e51b21a7 8392
Answer
stiki
August 2022 | 0 Ответы
pravilno li perevedeny predlozheniya s ispolzovaniem passivnoj konstrukcii 1
Answer
stiki
August 2022 | 0 Ответы
perevedite predlozheniya na anglijskij yazyk ispolzuya passivnye konstrukcii 1
Answer
stiki
August 2022 | 0 Ответы
tex]...
Answer
stiki
August 2022 | 0 Ответы
n; writeln('h=', h); f:=(sqr(x)+1)*cos(x); xi:=a+i*h; writeln('xi=',xi); yi:=xi;...
Answer
stiki
August 2022 | 0 Ответы
n; writeln('h=', h); f:=(sqr(x)+1)*cos(x); xi:=a+i*h; writeln('xi=',xi); yi:=xi;...
Answer
stiki
August 2022 | 0 Ответы
texverno iii vopros po nahozhdeniyu neizvestnyh h tak li vse nahoditsya libo
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 "tex]..."
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
7sin²x+4sinxcosx-3cos²x=0делим на сos²x
7tg²x+4tgx-3=0 D=16+84=100 √D=10
x1=1/14(-4+10)=6/14=3/7
x2=1/14(-4-10)= -1
x=arctg(3/7)+πk k∈Z
x=-π/4+πk k∈Z
корни на отрезке