Asked by Shang

Write the Recursive Formula for the given sequence.

1, 4, 16, 64, 256, ...

a(n+1) = a(n) * -4; a(1) = 1?
a(n+1) = a(n) * -3; a(1) = 1?
a(n+1) = a(n) * 4; a(1) = 1?
a(n+1) = a(n) * 3; a(1) = 1?

Answers

Answered by oobleck
well, it is clear that you keep multiplying by 4, right?
That only leaves one choice
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