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Resolver Progressão Aritimetica
Como resolver?
1-)Escreva:
a) Uma P.A de 6 termos em que a1= 1/2 e r=4
b)Uma P.A de 5 termos em que a1=2a e r= a+1
2-)Encontre o 5º termo em cada P.A
a)b/3 , b, ……)
3-) Determine o Valor de a, dabendo qe os nmeros (a=3), (3a-1) e (2-7a) estejam nessa onder em uma P.A
Preciso responder esses exercícios, mas perdi a explicação, poderia ser somente um exemplo. Assim eu poderia me encontrar! Desde já agradeço a Atenção!
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Answer #
Ainda tem duvida sobre Resolver Progressão Aritimetica, entao utilize o campo de respostas dessa mesma pergunta para contra argumentar novas explicacoes.Answer this Question
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Answer #1
1-
a)cada termo de uma P.A é obtido pela soma do anterior com a razão:
se a1=1/2 então a2=1/2 + 4 =9/2
a3=a2 + r = 9/2 + 4 = 17/2
a4=a3 + r = 17/2 + 4 = 25/2
a5=a4 + r = 25/2 + 4 =33/2
ou seja:
(1/2 , 9/2 , 17/2 , 25/2 , 33/2)