Home
О нас
Products
Services
Регистрация
Войти
Поиск
sayara91
@sayara91
July 2022
1
3
Report
Помогите пожалуйста с примерами)
Решить уравнение x^(lg2)+2^(lgx)=8
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
Gerren
x^(lg2)+2^(lgx)=8
x^(ln2/ln10)+2^(lnx/ln10)=8
2^(lnx/ln10)+1)=8
2^(lnx/ln10)=4
2^(lnx/ln10)=2^2
lnx/ln10=2
lnx=2ln10
lnx=ln10^2
x=100
2) 3^x*9^(y^2)=243 3^x*3^2y^2=3^5 3^(x+2y^2)=3^5 x+2y^2=5 x=5-2y^2
lnx+2lny=ln(lg100) lnxy^2=ln2 ln((5-2y^2)y^2)=ln2 x>0 y>0
y^2(5-2y^2)=2
5y^2-2y^4-2=0
2y^4-5y^2+2=0
y^2=a a>0
2a^2-5a+2=0
D=25-16=9 √9=3
a1=(5+3)/4=2
a2=(5-3)/4=2/4=1/2
y^2=2 y^2=1/2
y=√2 y=-√2 искл y=√1/2=√2/2 y=-√1/2 искл
x=5-2*2=1 x=5-1=4
ответ(1;√2) и(4;√2/2)
2 votes
Thanks 2
More Questions From This User
See All
sayara91
August 2022 | 0 Ответы
yunosha i devushka izmeryali odno i tozhe rasstoyanie v 143 m shagamishag yunoshi 65 sm a
Answer
sayara91
August 2022 | 0 Ответы
pri sushke griby teryayut 85 svoej massyskolko nado vzyat svezhih gribov chtoby po
Answer
sayara91
August 2022 | 0 Ответы
4 drugogo raven 27a nok ih raven 324 najti summu etih chisel
Answer
sayara91
August 2022 | 0 Ответы
kolichestvo knig otsylaemyh v biblioteku bolshe 170 menshe 210 snachala ih ukomp
Answer
sayara91
July 2022 | 0 Ответы
3 najti sin2alfa
Answer
sayara91
July 2022 | 0 Ответы
...
Answer
sayara91
July 2022 | 0 Ответы
storona kvadrata na 10 koroche shiriny pryamougolnika i na 20 koroche dliny pryamo
Answer
sayara91
July 2022 | 0 Ответы
1ploshad diagonalnyh sechenij pravilnogo parallelepipeda s osnovaniem romb rav
Answer
sayara91
July 2022 | 0 Ответы
1 v klasse eslichislo malchikov uvelichit na 30 i chislo devochek umenshit na
Answer
sayara91
July 2022 | 0 Ответы
pri kakom znachenii k proizvodnaya funkcii fx5cos3x 2kx 19 imeet naibolsh
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 пожалуйста с примерами)Решить уравнение x^(lg2)+2^(lgx)=8..."
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
x^(ln2/ln10)+2^(lnx/ln10)=8
2^(lnx/ln10)+1)=8
2^(lnx/ln10)=4
2^(lnx/ln10)=2^2
lnx/ln10=2
lnx=2ln10
lnx=ln10^2
x=100
2) 3^x*9^(y^2)=243 3^x*3^2y^2=3^5 3^(x+2y^2)=3^5 x+2y^2=5 x=5-2y^2
lnx+2lny=ln(lg100) lnxy^2=ln2 ln((5-2y^2)y^2)=ln2 x>0 y>0
y^2(5-2y^2)=2
5y^2-2y^4-2=0
2y^4-5y^2+2=0
y^2=a a>0
2a^2-5a+2=0
D=25-16=9 √9=3
a1=(5+3)/4=2
a2=(5-3)/4=2/4=1/2
y^2=2 y^2=1/2
y=√2 y=-√2 искл y=√1/2=√2/2 y=-√1/2 искл
x=5-2*2=1 x=5-1=4
ответ(1;√2) и(4;√2/2)