Mathematics
Senior High
Resolved
1枚目の赤丸の式って2枚目のように特性方程式を解いた後みたいなことであってますか?
6. Ants = pan + fin)
=
(n=式型)
(n=₁₁)
の
→ An + (n= R³f) at actpa Fit)
になるようなわこを考える
創an+1=2ann2-2n+3,a,-3
anti+α(n+1)+
2:R
+ B(n+1)+8
= 2(an+dn²+(n+)
3. Ant=an+f(n) (階語型)
→
階差数列(を用いたもの)の公式と豚)
→ @ =
1. an+1=an+20-1, a1= 4
n≧2のとき、
5-1
an=4+2126-1
= 4 + 25k -21
串2:1 12:1
= 4+2 | | (n-1)n - (h-1)
=12-2h+5
これはわんでも成り立つ
an=h-2n+5,
4. anti=pan+g (野時間型)
D.
Pa+gを解く
Tun ₁ = 2
ant1-1=4(an-ハ
2=40-3
d=1
ant = 4Qn-3
-1=41-3
Qnti-14(0-1)
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