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angelinapopova417
@angelinapopova417
August 2022
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определите номер n, если для геометрической прогрессии известно q=-2/3,b1=81/4 bn=4
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sangers1959
Verified answer
Q=-2/3 b₁=81/4 bn=4
bn=b₁*qⁿ=4
(81/4)*(-2/3)ⁿ=4
(-2/3)ⁿ=16/81
(-2/3)ⁿ=(2/3)⁴
n=4.
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Answers & Comments
Verified answer
Q=-2/3 b₁=81/4 bn=4bn=b₁*qⁿ=4
(81/4)*(-2/3)ⁿ=4
(-2/3)ⁿ=16/81
(-2/3)ⁿ=(2/3)⁴
n=4.