Arithmetic and Geometric Sequences Formulas

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Arithmetic Explicit Formula

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aₙ=a₁+d(n-1)

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Arithmetic Recursive Formula

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aₙ = aₙ₋₁+d ; a₁=

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Arithmetic Explicit Formula

aₙ=a₁+d(n-1)

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Arithmetic Recursive Formula

aₙ = aₙ₋₁+d ; a₁=

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Geometric Explicit Formula

aₙ=a₁ x rⁿ⁻¹

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Geometric Recursive Formula

aₙ=aₙ₋₁ x r ; aₙ=r x aₙ₋₁