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categoryرياضيات
schoolبكالوريوس
event_available2026-07-13
السؤال
Transcribed Image Text:
Find the limit of s(n) as n→ co.
Part 1 of 3
s(n) =
81 n(n+1)(2n+1)
3
7
Apply the limit as n→ ∞
Part 2 of 3
lim
n→
on both sides of s(n) =
n-
81 n(n+1)(2n+1)
7
∞
lim
s(n) =
n-
∞
∞
[(31)
n(n+1)(2n+1)
7
∞
Now simplify lim_s(n) = lim
n→ ∞
n→∞
( 81 ) n (n +
81 n(n+1)(2n + 1)
n°
Submit
lim s(n) lim
818
=
noo
(81)
= (81)
=
[ ( 81 ) + 1) ·
81 n (n + 1)(2n + 1)
n°
lim
n∞
lim
nco
= ( 81 ) [
n(n+1)(2n+1)
×
+3
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to find the limit of s(n).
+n
Use the summation formulas to rewrite the expression without the summation notation. Use the result to find
the sums for n = 10, 100, 1000, and 10,000.
i = 1
2i + 6
n²
Part 1 of 7
n
Using the summation formula the expression
2i +6
n²
can be
written as the expression without
i = 1
the summation notation.
Therefore,
Submit
i = 1
2i + 6
n²
1
2
n
i = 1
(2i + 6)
1
n
2
n
Σ2+ ΣΕ
i = 1
1
2
= 1 +
=
St
יח
7nX
n
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2
x )
2
n(n + 1)
+ 6n
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