example 1
pick a value of r, let's pick r = 3
sequence: 7, 21, 63, 189, 567, ...
example 2
pick a value of r, let's pick r = -2
sequence: 7, -14 , 28, ..... (find 2 more)
example 3
.....
example 4
....
We know they are geometric, because we used the definition
Write an example of a geometric sequence with a t(1) = 7, give at least the first 4 terms. Explain how you know that it is Geometric.
2 answers
Arithmetic sequences