Odpowiedź:
an = 3⁵ⁿ⁻²
a₁ = 3⁵*¹⁻² = 3⁵⁻² = 3³
a₂ = 3⁵*²⁻² = 3¹⁰⁻² = 3⁸
a₃ = 3⁵*³⁻² = 3¹⁵⁻² = 3¹³
a₃/a₂ = a₂/a₁
a₂² = a¹ * a³
(3⁸)² = 3³ * 3¹³
3¹⁶ = 3³⁺¹³
3¹⁶ = 3¹⁶
L = P , więc jest to ciąg geometryczny c.n.w
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Odpowiedź:
an = 3⁵ⁿ⁻²
a₁ = 3⁵*¹⁻² = 3⁵⁻² = 3³
a₂ = 3⁵*²⁻² = 3¹⁰⁻² = 3⁸
a₃ = 3⁵*³⁻² = 3¹⁵⁻² = 3¹³
a₃/a₂ = a₂/a₁
a₂² = a¹ * a³
(3⁸)² = 3³ * 3¹³
3¹⁶ = 3³⁺¹³
3¹⁶ = 3¹⁶
L = P , więc jest to ciąg geometryczny c.n.w