Help!Help!Help!Help!设数列｛an｝和｛bn｝满足：a1=b1=6,a2=b2=4,a3=b3=3且数列｛an-1 -an｝是等差数列（n是正整数）数列｛bn -2)是等比数列（n是正整数）（1）求｛an｝,｛bn｝的通项公式；（2）是否存在

来源：学生作业帮助网编辑：作业帮时间：2024/12/01 04:49:10

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