contestada

Complete the recursive formula of the arithmetic sequence
1
3
,
6
,
−
1
,
−
8
,
.
.
.
13,6,−1,−8,....
c
(
1
)
=
c(1)=
c
(
n
)
=
c
(
n
−
1
)
+
c(n)=c(n−1)+

Respuesta :

gmany

[tex]13,\ 6,\ -1,\ -8,\ ...\\\\a_1=13\\a_2=a_1-7\to a_2=13-7=6\\a_3=a_2-7\to a_3=6-7=-1\\a_4=a_3-7\to a_4=-1-7=-8\\\vdots\\\\\boxed{c_1=13}\\\boxed{c_n=c_{n-1}-7}[/tex]

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