9. Two recursive sequences u, and v, are defined by 1 Uo = 9, Un+1 =5Un – 3 2 Vn = Un + 6 i) Show that v, is a geometric sequence with common ratio r = and vo = 15 %3D ii) Calculate Sn = Ek=o Vk In terms of n iii) Hence or otherwise, find Tn = EX=0 Uk In terms of n.

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ISBN:9780470458365
Author:Erwin Kreyszig
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9. Two recursive sequences un and v, are defined by
1
Uo = 9, Un+1 = z Un - 3
|
Vn = Un + 6
i)
Show that v, is a geometric sequence with common ratio r = and vo = 15
ii)
Calculate
Sn = E-o Vk In terms of n
Hence or otherwise, find
Tn = ER=0 Uk In terms of n.
Evaluate lim Sn and lim Tn
iii)
iv)
n-00
n-00
Another sequence wn = In(vn)
v)
Show that w, is an arithmetic sequence with common difference - In2
vi)
Calculate
00
Tn =
Wk
k=0
Transcribed Image Text:9. Two recursive sequences un and v, are defined by 1 Uo = 9, Un+1 = z Un - 3 | Vn = Un + 6 i) Show that v, is a geometric sequence with common ratio r = and vo = 15 ii) Calculate Sn = E-o Vk In terms of n Hence or otherwise, find Tn = ER=0 Uk In terms of n. Evaluate lim Sn and lim Tn iii) iv) n-00 n-00 Another sequence wn = In(vn) v) Show that w, is an arithmetic sequence with common difference - In2 vi) Calculate 00 Tn = Wk k=0
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