Find the explicit formula for the given sequence. -4, 12, -36, 108,... a a_n=-4·(-3)^{n-1} b a_n=4·3^{n-1} c a_n=15·3^{n-1} d a_n=5·3^{n-1}

asked Aug 28, 2022 12.6k views

17 votes

Find the explicit formula for the given sequence.

-4, 12, -36, 108,...

a
a_n=-4·(-3)^{n-1}

b
a_n=4·3^{n-1}

c
a_n=15·3^{n-1}

d
a_n=5·3^{n-1}

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2 votes

Answer:

Option a.) an = -4(-3)^(n-1)

TYY answered Sep 2, 2022

by TYY

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