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Question 0503b
Sigma Notation
Factorials
Question
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Express
1
n
!
−
8
(
n
−
1
)
!
\frac{1}{n!} - \frac{8}{(n - 1)!}
n
!
1
−
(
n
−
1
)!
8
in the form
A
n
+
B
n
!
\frac{An+B}{n!}
n
!
A
n
+
B
where
A
{A}
A
and
B
{B}
B
are constants to be determined.
Attempt
A
=
{A=}
A
=
B
=
{B=}
B
=
Answer
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