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rickyop8010
23.06.2019 •
Mathematics
What are the explicit equation and domain for a geometric sequence with a first term of 4 and a second term of −8? an = 4(−2)n − 1; all integers where n ≥ 0 an = 4(−2)n − 1; all integers where n ≥ 1 an = 4(−12)n − 1; all integers where n ≥ 1 an = 4(−12)n − 1; all integers where n ≥ 0
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Ответ:
Option B is right
Step-by-step explanation:
Given:
There is a geometric sequence with first term =4
and second term =-8
We know that a geometric sequence is a sequence of numbers, in which each successive number is got by multiplying the previous number by a fixed value called common ratio.
First term is called a.
and common ratio is denoted by r.
The terms would be
Here we have a=4 and ar =-8
So r =common ratio =-2
nth term we mean n can take values as 1,2.....
So general term
is right answer
Hence option b.
Ответ:
x^3 is a product of three factors of x: x * x * x.
x^7 is a product of seven factors of x: x * x * x * x * x * x
When you multiply x^3 by x^7, you end up with a product of 10 factors of x:
x * x * x * x * x * x * x * x * x * x
A product of ten factors of x is x^10.