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Write the explicit formula that represents the geometric sequence-2, 8, -32, 128

Write the explicit formula that represents the geometric sequence-2, 8, -32, 128
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2 votes
Write the explicit formula that represents the geometric sequence-2, 8, -32, 128

asked
User Uday Chauhan
by
7.7k points

1 Answer

6 votes
The explicit formula for your geometric sequence would be an = -2 * 4ⁿ⁻¹.

The explicit formula is: an = a₁*r ⁿ⁻¹

a₁ = -2
r = 4
answered
User Headsvk
by
8.0k points
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