Question

Katiya🦆

求解

17.設 為下圖中每一個圖形裡所有黑點的個數,已知 q =1,a = 6,ag = 15, a = 28,
若依圖形的遞增規則,求ao A:190
O
5.9.13.
20+ (n-1).
a₁ = 1
a₂ = 6
5
a₂ = 15
9
An = any + (12+5)
13
1-5
a4 = 28
Q₂ = a₁ +
A3 = a^² +
A4 = Q3 +
Alo= q
A10 = 1 +

Answer 1

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綾

如圖