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- 3数列{an}中,a1=3an+二的n次方,求{an}
- 4THAT'S OKAY!翻译中文
- 5已知数列{an}满足a1=1,且an=1/3a(n-1)+(1/3)^n (n≥2,且n∈N+),则数列{an}的通项公式为
- 6色光的三原色混合在一起会混合成什么色啊?
- 7录音机的"关"用英文表示为
- 8my name is tom 中my做什么成分?宾语?
- 9he will go to the concert with his sister?为什么用g
- 10Draw your family photo and taik about it?英文在线翻译