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Asked Dec 2, 2019
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10.
Evaluate the sum> (-3k).
k 1
8
Σ (-3k)Ξ
k 1
(Simplify your answer.)
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10. Evaluate the sum> (-3k). k 1 8 Σ (-3k)Ξ k 1 (Simplify your answer.)

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Expert Answer

Step 1

Given,

...
83k)
k=1
(n(an) a 1 a)
-328-1k
Zk=1
n(n+1)
n=1 n 1+ 2 + 3 + .*.+n ==
=-3(123..... +8)
2
'8(8+1)
= -3
2
= -3(36)
-108
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83k) k=1 (n(an) a 1 a) -328-1k Zk=1 n(n+1) n=1 n 1+ 2 + 3 + .*.+n == =-3(123..... +8) 2 '8(8+1) = -3 2 = -3(36) -108

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