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Julia4151
@Julia4151
December 2019
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Escreva uma P.A de 5 termos sendo a1 = -10 e r= -3.
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An=a1+(n-1)r
an=-10+(n-1)(-3)
an=-10-3n+3
an=-3n-7
a1=-3×1-7=-3-7=-10
a2=-3×2-7=-6-7=-13
a3=-3×3-7=-9-7=-16
a4=-3×4-7=-12-7=-19
a5=-3×5-7=-15-7=-22
(-10;-13;-16;-19;-22...)
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an=-10+(n-1)(-3)
an=-10-3n+3
an=-3n-7
a1=-3×1-7=-3-7=-10
a2=-3×2-7=-6-7=-13
a3=-3×3-7=-9-7=-16
a4=-3×4-7=-12-7=-19
a5=-3×5-7=-15-7=-22
(-10;-13;-16;-19;-22...)