The four terms of the sequence are 4, -16, 64 and -256
How to determine the four terms of the sequence
From the question, we have the following parameters that can be used in our computation:
f(n) = f(n - 1) * -4
f(1) = 4
Set n = 2
So, we have
f(2) = f(2 - 1) * -4
f(2) = f(1) * -4
This means that
f(2) = 4 * -4
f(2) = -16
Set n = 3
So, we have
f(3) = f(3 - 1) * -4
f(3) = f(2) * -4
This means that
f(3) = -16 * -4
f(3) = 64
Set n = 4
So, we have
f(4) = f(4 - 1) * -4
f(4) = f(3) * -4
This means that
f(4) = 64 * -4
f(4) = -256
Hence, the four terms of the sequence are 4, -16, 64 and -256
Question
What are the four terms of the sequence
f(n) = f(n - 1) * -4
f(1) = 4