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Inara796
@Inara796
January 2020
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Determine a soma dos 10 primeiros termos da PA (2,5...)
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HiagoB
S=(a1+an)n/2
an = a1 + (n-1)*r
----
a10 = 2+(10-1)*3
a10 = 2+27
a10 = 29
S = (2+29)*10/2
S = (31*10)/2
S = 310/2
S = 155
Bons estudos ^_^
3 votes
Thanks 2
Inara796
Obg :)
HiagoB
De nada :)
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Lista de comentários
an = a1 + (n-1)*r
----
a10 = 2+(10-1)*3
a10 = 2+27
a10 = 29
S = (2+29)*10/2
S = (31*10)/2
S = 310/2
S = 155
Bons estudos ^_^