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Problem
In Exercises 47 and 48, find the first 6 terms and the 40th term of the sequence. 48.
b
k
=
(
−
2
)
k
k
+
1
b_{k}=\frac{(-2)^{k}}{k+1}
b
k
=
k
+
1
(
−
2
)
k
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