3 years ago

4 -12 36 -108 324 what's the rule

Mathematics

1 answer:

balandron [24]3 years ago

6 0

Hello,
$u_{1}=4\\
u_{2}=4*3=12\\
u_{3}=4*3^2=36\\
u_{4}=4*3^3=108\\
...\\

\boxed{u_{n}=4*{n-1}}\\$

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