The third term of a sequence is 64 while the seventh term is 4. Determine the sum of the first ten terms of the sequence given that it is: a) arithmetic [2 x 4 marks) b) geometric

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter6: The Trigonometric Functions
Section6.4: Values Of The Trigonometric Functions
Problem 23E
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The third term of a sequence is 64 while the seventh term is 4. Determine the sum of the first ten
terms of the sequence given that it is:
a) arithmetic
[2 x 4 marks]
b) geometric
Transcribed Image Text:The third term of a sequence is 64 while the seventh term is 4. Determine the sum of the first ten terms of the sequence given that it is: a) arithmetic [2 x 4 marks] b) geometric
tn = a + (n – 1)d
tn = arn-1
Sn =(2a + (n – 1)d]
a(r"-1)
Sn
r-1
Transcribed Image Text:tn = a + (n – 1)d tn = arn-1 Sn =(2a + (n – 1)d] a(r"-1) Sn r-1
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