a)a1=12 e r= 7 b)a1=12 e r = -7 c)a1=-2 e r =1/2 d)a1=12 e r =-0,25
a)
PA(12,19,26,33,40,...)
b)
PA(12,5,-2,-9,-16,...)
c)
PA(-2,-3/2,-1,-1/2,0,...)
d)
PA(12; 11,75; 11,5; 11,25; 11;...)
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Answers & Comments
a)
PA(12,19,26,33,40,...)
b)
PA(12,5,-2,-9,-16,...)
c)
PA(-2,-3/2,-1,-1/2,0,...)
d)
PA(12; 11,75; 11,5; 11,25; 11;...)