Articles
Register
Sign In
Search
louidta
@louidta
March 2022
1
27
Report
calcule a soma dos quarenta primeiros termos da PA (4,10,16,22,...)
Please enter comments
Please enter your name.
Please enter the correct email address.
Agree to
terms and service
You must agree before submitting.
Send
Lista de comentários
EmilyVeloso2
Primeiro calculando a40 a40=4+39.5=199
Calculando S40:
2)a22=a1+21.r80=-4+21r84=21rr=84/21r=4
3)
Se a1+a5=-14 -> a1+a1+4r=-14 -> 2a1 +4r=-14 (1)Se a1+a10=1 -> a1+a1+9r=1 -> 2a1+9r=1 (2) Subtraindo as equações
(2)-(1) = 5r=15 -> r=3
De (2): 2a1+9r=1 -> 2a1+27=1 -> 2a1=-26 -> a1=-13
Agora calculando a15=a1+14r = -13+14.3=
29
Finalmente calculando S15:
Espero te ajudado !!!!!
1 votes
Thanks 2
More Questions From This User
See All
louidta
March 2022 | 0 Respostas
Responda
×
Report " calcule a soma dos quarenta primeiros termos da PA (4,10,16,22,...).... Pergunta de ideia de louidta"
Your name
Email
Reason
-Select Reason-
Pornographic
Defamatory
Illegal/Unlawful
Spam
Other Terms Of Service Violation
File a copyright complaint
Description
Helpful Links
Sobre nós
Política de Privacidade
Termos e Condições
direito autoral
Contate-Nos
Helpful Social
Get monthly updates
Submit
Copyright © 2024 ELIBRARY.TIPS - All rights reserved.
Lista de comentários
Calculando S40: 2)a22=a1+21.r80=-4+21r84=21rr=84/21r=4
3) Se a1+a5=-14 -> a1+a1+4r=-14 -> 2a1 +4r=-14 (1)Se a1+a10=1 -> a1+a1+9r=1 -> 2a1+9r=1 (2) Subtraindo as equações (2)-(1) = 5r=15 -> r=3 De (2): 2a1+9r=1 -> 2a1+27=1 -> 2a1=-26 -> a1=-13 Agora calculando a15=a1+14r = -13+14.3= 29 Finalmente calculando S15: Espero te ajudado !!!!!