secuencia suma a_{n}=3^{n-1}

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`x`²	`x`^□	log_□	√☐	^□√☐	≤	≥	□□	·	÷	`x`^◦	π
(☐)^′	`ddx`	∂∂`x`	∫	∫_□^□	lim	∑	∞	`θ`	(`f` ◦ `g`)	`f`(`x`)

☐²

x^☐

√☐

^□√☐

□□

log_□

θ

∞

∫

ddx

≥	≤	·	÷	`x`^◦	(☐)	\|☐\|	(`f` ◦ `g`)	`f`(`x`)	ln	`e`^☐
(☐)^′	∂∂`x`	∫_□^□	lim	∑	sin	cos	tan	cot	csc	sec

simplify solve for inverse tangent line

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sequence sum a_n=3ⁿ⁻¹

Solution

−1−3ⁿ2

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Solution steps

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a_n=3ⁿ⁻¹

Find the sequence type for a_n=3ⁿ⁻¹: geometric sequence: r=3, a_n=3ⁿ⁻¹

Find the first term of the sequence a_n=3ⁿ⁻¹: a₁=1

Find the sum of the sequence a_n=3ⁿ⁻¹: S_n=−1−3ⁿ2

=−1−3ⁿ2

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sequence type a_n=3ⁿ⁻¹

first term a_n=3ⁿ⁻¹

nth term a_n=3ⁿ⁻¹

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Notebook

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−▭▭	<	7	8	9	÷	`AC`
+▭▭	>	4	5	6	×	☐☐☐
×▭▭	(	1	2	3	−	`x`
▭ \|▭	)	.	0	=	+	`y`

secuencia suma a_{n}=3^{n-1}

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