Mathematics
Senior High
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解答は右の写真の133です
✓ 133 次の条件によって定められる数列{an} の一般項を求めよ。 (15点)
=
a1
1
=
3 +2 (n=1,2, 3, ･･････)
2 an+1
an
131
an
2"
132 an=2.3n-1+1
1のと
133 an=3"-1
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