PA e PG

Question 1

Termo Geral da PA

Answer 1

•an = a1 + (n-1)r
ou
•an = ap + (n-p)r

Question 2

Soma da PA

Answer 2

Sn = (a1 + an)/2 . n

Question 3

Soma da PA de n ímpar

Answer 3

•Sn = Tc.n
ou
•Sn = a(n+1/2)

Question 4

Termo central da PA

Answer 4

Si-Sp = Si+Sp/2 = Sn/n

Question 5

Montante

Answer 5

= Capital + Juros

Question 6

Função afim da PA

Answer 6

a(x) = a0 +r.n

Question 7

PGs podem ser

Answer 7

•Crescente
•Decrescente
•Constante
•Alternante/Oscilante
•Estacionária

Question 8

termo central da PG de 3 termos

Answer 8

b = Raiz de a.c

Question 9

soma de PG finita

Answer 9

Sni = a1.(q^n - 1)
—————
q-1

Question 10

Soma da pg infinita

Answer 10

Si = a1
———
q - 1