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Arte-miy333 [17]
4 years ago
9

Find the explicit formula for the arithmetic sequence -31,-27,-23,-19 b(n)= ?

Mathematics
2 answers:
BigorU [14]4 years ago
4 0

b(n)=-31+4(n-1) is the explicit formula

PolarNik [594]4 years ago
4 0

a_n=a_1+(n-1)d\\ a_1=-31\\ d=a_n-a_{n-1}=-27-(-31)=-27+31=4\\ a_n=-31+(n-1)\cdot 4\\a_n=-31+4n-4\\ a_n=4n-35

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