Question

a)Determine o termo geral da PA (0,2,4,6,8...)

b)Determine o termo geral da PA (2,3,4,5...)

c) Determine o termo geral da PA (1,5,9,13...)
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Answer 1

an=a1+(n+1).r = 0+(n-1).2= 2n-2

an=a1+(n+1).r = 2+(n-1).1= 2+n-1=n+1

an=a1+(n+1).r =1+(n-1).4=1+4n-4=4n-3

Answer 2

Resposta:

termo geral = an

a)Determine o termo geral da PA (0,2,4,6,8...)

an = a1 + (n – 1) * r

an = 0 + (n - 1) * 2

b)Determine o termo geral da PA (2,3,4,5...)

an = a1 + (n – 1) * r

an = 2 + (n - 1) * 1

c) Determine o termo geral da PA (1,5,9,13...)

an = a1 + (n – 1) * r

an = 1 + (n - 1) * 4