Mathematics
Senior High
計算方法を教えてください！数列bnのところです！
a= -4,
1
an = 2·3" 1となる。 30<D
33
(1) 6月 = (an)? = (2·3"に)? = 4·9"-1 より
数列{b»}は 初項 4, 公比9の等比数列と
なる。
50
A.02
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