Respostas

2013-11-20T19:12:04-02:00
A_1 = - 3
n = 12
r = 1 - (-3) = 4

a_12 = - 3 + (12 - 1)*4
a_12 = - 3 + 44
a_12 = 41


Abraços
1 4 1
obrigadoo
Do you still need any help?
Four stars?
not you already took my doubts, thanks a lot
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