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Which of the following can be used to evaluate the series ⁹Σₖ_=₁ 2(4)ᵏ⁻¹?

User Masaya
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1 Answer

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Final answer:

To evaluate the series, we can use the formula for the sum of a geometric series. In this case, the sum is -174762.

Step-by-step explanation:

To evaluate the series ⁹Σₖ_=₁ 2(4)ᵏ⁻¹, we can use the formula for the sum of a geometric series. When the first term is a and the common ratio is r, the sum of the series is given by:

S = a(1 - rⁿ) / (1 - r)

In this case, the first term is 2(4)⁰ = 2 and the common ratio is 4. The number of terms in the series is 9. Plugging these values into the formula, we get:

S = 2(1 - 4⁹) / (1 - 4) = 2(1 - 262144) / -3 = 524286 / -3 = -174762.

User MateuszPrzybyla
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