find the first tour terms given that a¹ = 3 , r = 2
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find the first tour terms given that a¹ = 3 , r = 2
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Answer:
it's actually ez and this is my ans.
(B) (U) (B) (U) Ka dimo alm
Step-by-step explanation:
If the first term is 4 and the common ratio (r) is 3, t
Explanation:
If the first term is 4 and the common ratio (r) is 3, then the second term must be 3 times the first time, since a geometric series is a repeated multiplication. Alternatively, you can use the formula for the nth of a geometric series, which will benefit when you're dealing with very large numbers such as finding
t
26
(the 26th term).
The following solution solves this problem using the formula:
t
n
= a •
r
n
−
1
t
4
= 4 •
3
4
−
1
t
4
= 4 • 27
t
4
= 108
The 4th term is 108, and by logical deduction the 3rd term is 36, the second term 12 and the first term 4.
t
1
= 4
t
2
= 12
t
3
= 36
t
4
= 108